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  • Making an element draggable?

    - by user246114
    Hi, I'm trying to make an element draggable, like so: var element = $("<li id='test'>Hello</li>"); element.appendTo("#panelParent"); element.draggable("enable"); element.draggable("option", "connectToSortable", '#panelTarget'); element.draggable("option", "helper", 'clone'); element.draggable("option", "revert", 'invalid'); nothing happens when I try dragging this element. It works fine though if I embed the object in the page beforehand instead of trying to dynamically create the element. Any idea what I'm missing? For example, this works: $(function() { $("#test").draggable({ connectToSortable: '#panelTarget', helper: 'clone', revert: 'invalid' }); }); <ul> <li id='test'>Hello</li> </ul> Thanks

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  • Parameter pack aware std::is_base_of()

    - by T. Carter
    Is there a possibility to have a static assertion whether a type provided as template argument implements all of the types listed in the parameter pack ie. a parameter pack aware std::is_base_of()? template <typename Type, typename... Requirements> class CommonBase { static_assert(is_base_of<Requirements..., Type>::value, "Invalid."); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ parameter pack aware version of std::is_base_of() public: template <typename T> T* as() { static_assert(std::is_base_of<Requirements..., T>::value, "Invalid."); return reinterpret_cast<T*>(this); } };

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  • .NET (C#): Getting child windows when you only have a process handle or PID?

    - by shea241
    Kind of a special case problem: I start a process with System.Diagnostics.Process.Start(..) The process opens a splash screen -- this splash screen becomes the main window. The splash screen closes and the 'real' UI is shown. The main window (splash screen) is now invalid. I still have the Process object, and I can query its handle, module, etc. But the main window handle is now invalid. I need to get the process's UI (or UI handle) at this point. Assume I cannot change the behavior of the process to make this any easier (or saner). I have looked around online but I'll admit I didn't look for more than an hour. Seemed like it should be somewhat trivial :-( Thanks

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  • Wifi not working after a few minutes

    - by drtanz
    I'm using a few MacBooks and iPads connected to a router via WiFi. The problem is that a few minutes after they connect via WiFi the connection stops working. This happens on all devices. I went into the router settings by connecting via cable and everything seems in order. Connecting a laptop via cable to the router I can use internet as normal, the problem is only with WiFi. What can be the problem here? Here are the connected clients Connected Clients MAC Address Idle(s) RSSI(dBm) IP Addr Host Name Mode Speed (kbps) 14:10:9F:F3:48:D6 1 -36 192.168.0.5 Jeans-Air n 78000 14:99:E2:C6:41:10 1 -36 192.168.0.8 JeanGaleasiPad n 24000 Here's the router event log Mon Dec 30 04:12:30 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A)... Mon Dec 30 04:12:25 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:5) -... Mon Dec 30 02:17:56 2013 Notice (6) WiFi Interface [wl0] set to Channel 40 (Side-Band Channel:36)... Mon Dec 30 02:16:04 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:7) ... Mon Dec 30 01:59:26 2013 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A)... Mon Dec 30 01:59:22 2013 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:2) -... Sun Dec 29 23:27:51 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A)... Sun Dec 29 23:27:49 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A... Sun Dec 29 14:32:55 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Sat Dec 28 13:08:19 2013 Error (4) DHCP REBIND WARNING - Field invalid in response ;CM-MAC=1c:3e... Fri Dec 27 18:10:19 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Fri Dec 27 16:08:55 2013 Error (4) Map Request Retry Timeout;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Thu Dec 26 21:08:53 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:7) ... Thu Dec 26 20:43:50 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A... Tue Dec 24 12:45:03 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Dec 24 04:55:52 2013 Error (4) Map Request Retry Timeout;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:32:00 2013 Notice (6) TLV-11 - unrecognized OID;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:32:00 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=1c:3e:... Mon Dec 23 12:32:00 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=1c:3e:... Mon Dec 23 12:32:00 2013 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC... Mon Dec 23 18:32:02 2013 Notice (6) Honoring MDD; IP provisioning mode = IPv4 Mon Dec 23 18:31:10 2013 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=1c:3e:84:f1... Mon Dec 23 18:28:57 2013 Critical (3) Received Response to Broadcast Maintenance Request, But no Un... Mon Dec 23 18:28:25 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Mon Dec 23 12:17:48 2013 Notice (6) TLV-11 - unrecognized OID;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:17:48 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=1c:3e:... Mon Dec 23 12:17:48 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=1c:3e:... Mon Dec 23 12:17:48 2013 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC... Mon Dec 23 18:17:48 2013 Notice (6) Honoring MDD; IP provisioning mode = IPv4 Mon Dec 23 18:16:58 2013 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=1c:3e:84:f1... Mon Dec 23 18:16:15 2013 Critical (3) Received Response to Broadcast Maintenance Request, But no Un... Mon Dec 23 18:15:43 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...

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  • dvd drive I/O error?

    - by bobby
    i get dis error evry time i burn a cd/dvd thru my dvd drive...!! Nero Burning ROM bobby 4C85-200E-4005-0004-0000-7660-0800-35X3-0000-407M-MX37-**** (*) Windows XP 6.1 IA32 WinAspi: - NT-SPTI used Nero Version: 7.11.3. Internal Version: 7, 11, 3, (Nero Express) Recorder: Version: UL01 - HA 1 TA 1 - 7.11.3.0 Adapter driver: HA 1 Drive buffer : 2048kB Bus Type : default CD-ROM: Version: 52PP - HA 1 TA 0 - 7.11.3.0 Adapter driver: HA 1 === Scsi-Device-Map === === CDRom-Device-Map === ATAPI-CD ROM-DRIVE-52MAX F: CdRom0 HL-DT-ST DVDRAM GSA-H12N G: CdRom1 ======================= AutoRun : 1 Excluded drive IDs: WriteBufferSize: 83886080 (0) Byte BUFE : 0 Physical memory : 958MB (981560kB) Free physical memory: 309MB (317024kB) Memory in use : 67 % Uncached PFiles: 0x0 Use Inquiry : 1 Global Bus Type: default (0) Check supported media : Disabled (0) 11.6.2010 CD Image 10:43:02 AM #1 Text 0 File SCSIPTICommands.cpp, Line 450 LockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL 10:43:02 AM #2 Text 0 File Burncd.cpp, Line 3186 HL-DT-ST DVDRAM GSA-H12N Buffer underrun protection activated 10:43:02 AM #3 Text 0 File Burncd.cpp, Line 3500 Turn on Disc-At-Once, using CD-R/RW media 10:43:02 AM #4 Text 0 File DlgWaitCD.cpp, Line 307 Last possible write address on media: 359848 ( 79:59.73) Last address to be written: 318783 ( 70:52.33) 10:43:02 AM #5 Text 0 File DlgWaitCD.cpp, Line 319 Write in overburning mode: NO (enabled: CD) 10:43:02 AM #6 Text 0 File DlgWaitCD.cpp, Line 2988 Recorder: HL-DT-ST DVDRAM G SA-H12N; CDR co de: 00 97 27 18; O SJ entry from: Pla smon Data systems Ltd. ATIP Data: Special Info [hex] 1: D0 00 A0, 2: 61 1B 12 (LI 97:27.18), 3: 4F 3B 4A ( LO 79:59.74) Additional Info [hex] 1: 00 00 00 (invalid), 2: 00 00 00 (invalid), 3: 00 0 0 00 (invalid) 10:43:02 AM #7 Text 0 File DlgWaitCD.cpp, Line 493 Protocol of DlgWaitCD activities: TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 318784 blo cks [G: HL-DT-ST DVDRAM GSA-H12N] -------------------------------------------------------------- 10:43:02 AM #9 Text 0 File ThreadedTransferInterface.cpp, Line 986 Prepare [G: HL-DT-ST DVDRAM GSA-H12N] for write in CUE-sheet-DAO DAO infos: ========== MCN: "" TOCType: 0x00; Se ssion Clo sed, disc fixated Tracks 1 to 1: Idx 0 Idx 1 Next T rk 1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 307200 6531768 32, ISRC "" DAO layout: =========== ___Start_|____Track_|_Idx_|_CtrlAdr_|_____Size_|______NWA_|_RecDep__________ -150 | lead-in | 0 | 0x41 | 0 | 0 | 0x00 -150 | 1 | 0 | 0x41 | 0 | 0 | 0x00 0 | 1 | 1 | 0x41 | 318784 | 318784 | 0x00 318784 | lead-out | 1 | 0x41 | 0 | 0 | 0x00 10:43:02 AM #10 Text 0 File SCSIPTICommands.cpp, Line 240 SPTILockVolume - completed successfully for FSCTL_LOCK_VOLUME 10:43:02 AM #11 Text 0 File Burncd.cpp, Line 4286 Caching options: cache CDRom or Network-Yes, small files-Yes ( ON 10:43:03 AM #19 Text 0 File MMC.cpp, Line 18034 CueData, Len=32 41 00 00 14 00 00 00 00 41 01 00 10 00 00 00 00 41 01 01 10 00 00 02 00 41 aa 01 14 00 46 34 22 10:43:03 AM #20 Text 0 File ThreadedTransfer.cpp, Line 268 Pipe memory size 83836800 10:43:16 AM #21 Text 0 File Cdrdrv.cpp, Line 1405 10:43:16.806 - G: HL-DT-ST DVDRAM GSA-H12N : Queue again later 10:43:42 AM #22 SPTI -1502 File SCSIPassThrough.cpp, Line 181 CdRom1: SCSIStatus(x02) WinError(0) NeroError(-1502) Sense Key: 0x04 (KEY_HARDWARE_ERROR) Nero Report 2 Nero Burning ROM Sense Code: 0x08 Sense Qual: 0x03 CDB Data: 0x2A 00 00 00 4D 00 00 00 20 00 00 00 Sense Area: 0x70 00 04 00 00 00 00 10 53 29 A1 80 08 03 Buffer x0c7d9a40: Len x10000 0xDC 87 EB 41 6E AC 61 5A 07 B2 DB 78 B5 D4 D9 24 0x8D BC 51 38 46 56 0F EE 16 15 5C 5B E3 B0 10 16 0x14 B1 C3 6E 30 2B C4 78 15 AB D5 92 09 B7 81 23 10:43:42 AM #23 CDR -1502 File Writer.cpp, Line 306 DMA-driver error, CRC error G: HL-DT-ST DVDRAM GSA-H12N 10:43:55 AM #24 Phase 38 File dlgbrnst.cpp, Line 1767 Burn process failed at 48x (7,200 KB/s) 10:43:55 AM #25 Text 0 File SCSIPTICommands.cpp, Line 287 SPTIDismountVolume - completed successfully for FSCTL_DISMOUNT_VOLUME 10:44:01 AM #26 Text 0 File Cdrdrv.cpp, Line 11412 DriveLocker: UnLockVolume completed 10:44:01 AM #27 Text 0 File SCSIPTICommands.cpp, Line 450 UnLockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL Existing drivers: Registry Keys: HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon Nero Report 3

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  • iptables - quick safety eval & limit max conns over time

    - by Peter Hanneman
    Working on locking down a *nix server box with some fancy iptable(v1.4.4) rules. I'm approaching the matter with a "paranoid, everyone's out to get me" style, not necessarily because I expect the box to be a hacker magnet but rather just for the sake of learning iptables and *nix security more throughly. Everything is well commented - so if anyone sees something I missed please let me know! The *nat table's "--to-ports" point to the only ports with actively listening services. (aside from pings) Layer 2 apps listen exclusively on chmod'ed sockets bridged by one of the layer 1 daemons. Layers 3+ inherit from layer 2 in a similar fashion. The two lines giving me grief are commented out at the very bottom of the *filter rules. The first line runs fine but it's all or nothing. :) Many thanks, Peter H. *nat #Flush previous rules, chains and counters for the 'nat' table -F -X -Z #Redirect traffic to alternate internal ports -I PREROUTING --src 0/0 -p tcp --dport 80 -j REDIRECT --to-ports 8080 -I PREROUTING --src 0/0 -p tcp --dport 443 -j REDIRECT --to-ports 8443 -I PREROUTING --src 0/0 -p udp --dport 53 -j REDIRECT --to-ports 8053 -I PREROUTING --src 0/0 -p tcp --dport 9022 -j REDIRECT --to-ports 8022 COMMIT *filter #Flush previous settings, chains and counters for the 'filter' table -F -X -Z #Set default behavior for all connections and protocols -P INPUT DROP -P OUTPUT DROP -A FORWARD -j DROP #Only accept loopback traffic originating from the local NIC -A INPUT -i lo -j ACCEPT -A INPUT ! -i lo -d 127.0.0.0/8 -j DROP #Accept all outgoing non-fragmented traffic having a valid state -A OUTPUT ! -f -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT #Drop fragmented incoming packets (Not always malicious - acceptable for use now) -A INPUT -f -j DROP #Allow ping requests rate limited to one per second (burst ensures reliable results for high latency connections) -A INPUT -p icmp --icmp-type 8 -m limit --limit 1/sec --limit-burst 2 -j ACCEPT #Declaration of custom chains -N INSPECT_TCP_FLAGS -N INSPECT_STATE -N INSPECT #Drop incoming tcp connections with invalid tcp-flags -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ALL ALL -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ALL NONE -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ACK,FIN FIN -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ACK,PSH PSH -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ACK,URG URG -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ALL FIN,PSH,URG -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags FIN,RST FIN,RST -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags SYN,RST SYN,RST -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ALL SYN,FIN,PSH,URG -j DROP -A INSPECT_TCP_FLAGS -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP #Accept incoming traffic having either an established or related state -A INSPECT_STATE -m state --state ESTABLISHED,RELATED -j ACCEPT #Drop new incoming tcp connections if they aren't SYN packets -A INSPECT_STATE -m state --state NEW -p tcp ! --syn -j DROP #Drop incoming traffic with invalid states -A INSPECT_STATE -m state --state INVALID -j DROP #INSPECT chain definition -A INSPECT -p tcp -j INSPECT_TCP_FLAGS -A INSPECT -j INSPECT_STATE #Route incoming traffic through the INSPECT chain -A INPUT -j INSPECT #Accept redirected HTTP traffic via HA reverse proxy -A INPUT -p tcp --dport 8080 -j ACCEPT #Accept redirected HTTPS traffic via STUNNEL SSH gateway (As well as tunneled HTTPS traffic destine for other services) -A INPUT -p tcp --dport 8443 -j ACCEPT #Accept redirected DNS traffic for NSD authoritative nameserver -A INPUT -p udp --dport 8053 -j ACCEPT #Accept redirected SSH traffic for OpenSSH server #Temp solution: -A INPUT -p tcp --dport 8022 -j ACCEPT #Ideal solution: #Limit new ssh connections to max 10 per 10 minutes while allowing an "unlimited" (or better reasonably limited?) number of established connections. #-A INPUT -p tcp --dport 8022 --state NEW,ESTABLISHED -m recent --set -j ACCEPT #-A INPUT -p tcp --dport 8022 --state NEW -m recent --update --seconds 600 --hitcount 11 -j DROP COMMIT *mangle #Flush previous rules, chains and counters in the 'mangle' table -F -X -Z COMMIT

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  • Causes of sudden massive filesystem damage? ("root inode is not a directory")

    - by poolie
    I have a laptop running Maverick (very happily until yesterday), with a Patriot Torx SSD; LUKS encryption of the whole partition; one lvm physical volume on top of that; then home and root in ext4 logical volumes on top of that. When I tried to boot it yesterday, it complained that it couldn't mount the root filesystem. Running fsck, basically every inode seems to be wrong. Both home and root filesystems show similar problems. Checking a backup superblock doesn't help. e2fsck 1.41.12 (17-May-2010) lithe_root was not cleanly unmounted, check forced. Resize inode not valid. Recreate? no Pass 1: Checking inodes, blocks, and sizes Root inode is not a directory. Clear? no Root inode has dtime set (probably due to old mke2fs). Fix? no Inode 2 is in use, but has dtime set. Fix? no Inode 2 has a extra size (4730) which is invalid Fix? no Inode 2 has compression flag set on filesystem without compression support. Clear? no Inode 2 has INDEX_FL flag set but is not a directory. Clear HTree index? no HTREE directory inode 2 has an invalid root node. Clear HTree index? no Inode 2, i_size is 9581392125871137995, should be 0. Fix? no Inode 2, i_blocks is 40456527802719, should be 0. Fix? no Reserved inode 3 (<The ACL index inode>) has invalid mode. Clear? no Inode 3 has compression flag set on filesystem without compression support. Clear? no Inode 3 has INDEX_FL flag set but is not a directory. Clear HTree index? no .... Running strings across the filesystems, I can see there are what look like filenames and user data there. I do have sufficiently good backups (touch wood) that it's not worth grovelling around to pull back individual files, though I might save an image of the unencrypted disk before I rebuild, just in case. smartctl doesn't show any errors, neither does the kernel log. Running a write-mode badblocks across the swap lv doesn't find problems either. So the disk may be failing, but not in an obvious way. At this point I'm basically, as they say, fscked? Back to reinstalling, perhaps running badblocks over the disk, then restoring from backup? There doesn't even seem to be enough data to file a meaningful bug... I don't recall that this machine crashed last time I used it. At this point I suspect a bug or memory corruption caused it to write garbage across the disks when it was last running, or some kind of subtle failure mode for the SSD. What do you think would have caused this? Is there anything else you'd try?

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  • how to clear the textbox value of asyncfileupload .. ?

    - by AmiT
    There is one button(MyButton). OnClick of this button a modalpopup(MyPopup) appears with one asyncfileupload ajax control, Ok button and Cancel button. The browse functionality of the asyncfileupload functionality is working fine, No problem. But after postback, if I click the MyButton again, the popup appearing with the previous path in the asyncfileupload control's textbox. How to clear it ... ! Thanks in advance.

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  • ASP.NET MVC Ajax and the CKEditor

    - by durilai
    I am working with MVC 1, and the CKEditor. I am integrating ajax forms which work great, but the editor window disappears after the ajax post. In webforms, I would have to not use ajax, or use a postback trigger. Is there a way to reload the editor on the ajax submission? Any help is appreciated.

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  • Some problems with GridView in webpart with multiple filters.

    - by NF_81
    Hello, I'm currently working on a highly configurable Database Viewer webpart for WSS 3.0 which we are going to need for several customized sharepoint sites. Sorry in advance for the large wall of text, but i fear it's necessary to recap the whole issue. As background information and to describe my problem as good as possible, I'll start by telling you what the webpart shall do: Basically the webpart contains an UpdatePanel, which contains a GridView and an SqlDataSource. The select-query the Datasource uses can be set via webbrowseable properties or received from a consumer method from another webpart. Now i wanted to add a filtering feature to the webpart, so i want a dropdownlist in the headerrow for each column that should be filterable. As the select-query is completely dynamic and i don't know at design time which columns shall be filterable, i decided to add a webbrowseable property to contain an xml-formed string with filter information. So i added the following into OnRowCreated of the gridview: void gridView_RowCreated(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.Header) { for (int i = 0; i < e.Row.Cells.Count; i++) { if (e.Row.Cells[i].GetType() == typeof(DataControlFieldHeaderCell)) { string headerText = ((DataControlFieldHeaderCell)e.Row.Cells[i]).ContainingField.HeaderText; // add sorting functionality if (_allowSorting && !String.IsNullOrEmpty(headerText)) { Label l = new Label(); l.Text = headerText; l.ForeColor = Color.Blue; l.Font.Bold = true; l.ID = "Header" + i; l.Attributes["title"] = "Sort by " + headerText; l.Attributes["onmouseover"] = "this.style.cursor = 'pointer'; this.style.color = 'red'"; l.Attributes["onmouseout"] = "this.style.color = 'blue'"; l.Attributes["onclick"] = "__doPostBack('" + panel.UniqueID + "','SortBy$" + headerText + "');"; e.Row.Cells[i].Controls.Add(l); } // check if this column shall be filterable if (!String.IsNullOrEmpty(filterXmlData)) { XmlNode columnNode = GetColumnNode(headerText); if (columnNode != null) { string dataValueField = columnNode.Attributes["DataValueField"] == null ? "" : columnNode.Attributes["DataValueField"].Value; string filterQuery = columnNode.Attributes["FilterQuery"] == null ? "" : columnNode.Attributes["FilterQuery"].Value; if (!String.IsNullOrEmpty(dataValueField) && !String.IsNullOrEmpty(filterQuery)) { SqlDataSource ds = new SqlDataSource(_conStr, filterQuery); DropDownList cbx = new DropDownList(); cbx.ID = "FilterCbx" + i; cbx.Attributes["onchange"] = "__doPostBack('" + panel.UniqueID + "','SelectionChange$" + headerText + "$' + this.options[this.selectedIndex].value);"; cbx.Width = 150; cbx.DataValueField = dataValueField; cbx.DataSource = ds; cbx.DataBound += new EventHandler(cbx_DataBound); cbx.PreRender += new EventHandler(cbx_PreRender); cbx.DataBind(); e.Row.Cells[i].Controls.Add(cbx); } } } } } } } GetColumnNode() checks in the filter property, if there is a node for the current column, which contains information about the Field the DropDownList should bind to, and the query for filling in the items. In cbx_PreRender() i check ViewState and select an item in case of a postback. In cbx_DataBound() i just add tooltips to the list items as the dropdownlist has a fixed width. Previously, I used AutoPostback and SelectedIndexChanged of the DDL to filter the grid, but to my disappointment it was not always fired. Now i check __EVENTTARGET and __EVENTARGUMENT in OnLoad and call a function when the postback event was due to a selection change in a DDL: private void FilterSelectionChanged(string columnName, string selectedValue) { columnName = "[" + columnName + "]"; if (selectedValue.IndexOf("--") < 0 ) // "-- All --" selected { if (filter.ContainsKey(columnName)) filter[columnName] = "='" + selectedValue + "'"; else filter.Add(columnName, "='" + selectedValue + "'"); } else { filter.Remove(columnName); } gridView.PageIndex = 0; } "filter" is a HashTable which is stored in ViewState for persisting the filters (got this sample somewhere on the web, don't remember where). In OnPreRender of the webpart, i call a function which reads the ViewState and apply the filterExpression to the datasource if there is one. I assume i had to place it here, because if there is another postback (e.g. for sorting) the filters are not applied any more. private void ApplyGridFilter() { string args = " "; int i = 0; foreach (object key in filter.Keys) { if (i == 0) args = key.ToString() + filter[key].ToString(); else args += " AND " + key.ToString() + filter[key].ToString(); i++; } dataSource.FilterExpression = args; ViewState.Add("FilterArgs", filter); } protected override void OnPreRender(EventArgs e) { EnsureChildControls(); if (WebPartManager.DisplayMode.Name == "Edit") { errMsg = "Webpart in Edit mode..."; return; } if (useWebPartConnection == true) // get select-query from consumer webpart { if (provider != null) { dataSource.SelectCommand = provider.strQuery; } } try { int currentPageIndex = gridView.PageIndex; if (!String.IsNullOrEmpty(m_SortExpression)) { gridView.Sort("[" + m_SortExpression + "]", m_SortDirection); } gridView.PageIndex = currentPageIndex; // for some reason, the current pageindex resets after sorting ApplyGridFilter(); gridView.DataBind(); } catch (Exception ex) { Functions.ShowJavaScriptAlert(Page, ex.Message); } base.OnPreRender(e); } So i set the filterExpression and the call DataBind(). I don't know if this is ok on this late stage.. don't have a lot of asp.net experience after all. If anyone can suggest a better solution, please give me a hint. This all works great so far, except when i have two or more filters and set them to a combination that returns zero records. Bam ... gridview gone, completely - without a possiblity of changing the filters back. So i googled and found out that i have to subclass gridview in order to always show the headerrow. I found this solution and implemented it with some modifications. The headerrow get's displayed and i can change the filters even if the returned result contains no rows. But finally to my current problem: When i have two or more filters set which return zero rows, and i change back one filter to something that should return rows, the gridview remains empty (although the pager is rendered). I have to completly refresh the page to reset the filters. When debugging, i can see in the overridden CreateChildControls of the grid, that the base method indeed returns 0, but anyway... the gridView.RowCount remains 0 after databinding. Anyone have an idea what's going wrong here?

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  • VS2010. Dropdownlist Autopostback works in IDE, not when deployed

    - by George
    I have a VS2010 RC ASP.NET web page,when a user changes the drop down selection on an auto postback dropdown, it refreshes a small grid and a few labels in various places on the page. I know wrapping a whole page in a big UpdatePanel control will cause horror from many of you, but that's what I did. I really didn't want a full page refresh and I didn't know how to update a table on the client side using Javascript and I figured it would be a big change. Suggestions for avoiding this are welcomed, but my main desire is to understand teh error I am getting. When I do the auto postbacks in the IDE, everything works fine, but if I deploy the code (IIS 5.5 on XP), the second auto postback works but the seconds one gives me his error. Ajax is one big nasty blackbox to me. Can someone help, please? Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; InfoPath.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; InfoPath.2; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MS-RTC LM 8; MS-RTC EA 2; OfficeLiveConnector.1.4; OfficeLivePatch.1.3; .NET4.0C; .NET4.0E) Timestamp: Sun, 28 Mar 2010 17:23:23 UTC Message: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object. Line: 796 Char: 13 Code: 0 URI: http://localhost/BESI/ScriptResource.axd?d=3HKc1zGdeSk2WM7LpI9tTpMQUN7bCfQaPKi6MHy3P9dace9kFGR5G-jymRLHm0uxZ0SqWlVSWl9vAWK5JiPemjSRfdtUq34Dd5fQ3FoIbiyQ-hcum21C-j06-c0YF7hE0&t=5f011aa5 Message: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object. Line: 796 Char: 13 Code: 0 URI: http://localhost/BESI/ScriptResource.axd?d=3HKc1zGdeSk2WM7LpI9tTpMQUN7bCfQaPKi6MHy3P9dace9kFGR5G-jymRLHm0uxZ0SqWlVSWl9vAWK5JiPemjSRfdtUq34Dd5fQ3FoIbiyQ-hcum21C-j06-c0YF7hE0&t=5f011aa5 Message: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object. Line: 796 Char: 13 Code: 0 URI: http://localhost/BESI/ScriptResource.axd?d=3HKc1zGdeSk2WM7LpI9tTpMQUN7bCfQaPKi6MHy3P9dace9kFGR5G-jymRLHm0uxZ0SqWlVSWl9vAWK5JiPemjSRfdtUq34Dd5fQ3FoIbiyQ-hcum21C-j06-c0YF7hE0&t=5f011aa5

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  • Integrating MarkitUp and MarkdownSharp with asp.net forms website

    - by N00b
    Hi, I'm using markdownsharp with my asp.net forms website. I want to use MarkItUp as my editor and have found a straight forward article on how to integrate with MVC which seems straight forward enough: http://rsolberg.com/2010/09/asp-net-mvc-markitup-rich-text-editor/ However, how do I do this with a forms website? How do I get the MarkItDown Textarea on a postback and get the preview to work as well?

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  • System.Web.HttpException on asp:gridview pagination

    - by Carlos Muñoz
    I have the following <asp:gridview> with one one TemplateField. En each cell there is an image with a link and a text with a link. It has AllowPaging=True This is the gridview: <asp:GridView ID="gvExperiencias" runat="server" AllowPaging="True" GridLines="None" ShowHeader="False" AutoGenerateColumns="False" Width="650px" PageSize="4" OnDataBinding="gvExperiencias_DataBinding" OnPageIndexChanging="gvExperiencias_PageIndexChanging"> <PagerSettings Mode="NumericFirstLast" FirstPageImageUrl="~/images/fle_pag_izq.gif" LastPageImageUrl="~/images/fle_pag_der.gif" NextPageImageUrl="~/images/fle_pag_der.gif" PreviousPageImageUrl="~/images/fle_pag_izq.gif" Position="TopAndBottom" PageButtonCount="4" FirstPageText="" LastPageText="" NextPageText="" PreviousPageText=""></PagerSettings> <Columns> <asp:TemplateField> <ItemTemplate> <div id="it_0" class="new_solo_exp_ini"> <asp:HyperLink ID="a_0" runat="server" NavigateUrl='<%# "experiencia.aspx?cod_cod=" + Eval("tttb_articulo_relacion_0.ARTCOD_ARTREL") + "&pag=" + pag + "&grp=" + Eval("idiocod_cod_idi_0") + "&cod="+cod %>' Visible='<%# Eval("NotEmpty_0") %>'> <asp:Image ID="Image_0" runat="server" Height="88px" ImageUrl='<%# Eval("arigls_nom_img_0","~/ArchivosUsuario/1/1/Articulos/{0}") %>' Width="88px" CssClass="new_image_exp_ini" /> </asp:HyperLink> <div class="new_vineta_tit_exp_ini"> <asp:HyperLink ID="HyperLink_0" runat="server" NavigateUrl='<%# "experiencia.aspx?cod_cod=" + Eval("tttb_articulo_relacion_0.ARTCOD_ARTREL") + "&pag=" + pag + "&grp=" + Eval("idiocod_cod_idi_0") + "&cod="+cod %>' Text='<%# Bind("arigls_tit_0") %>'> </asp:HyperLink> </div> </div> </ItemTemplate> </asp:TemplateField> </Columns> <PagerStyle CssClass="new_pag_bajo_exp_ini" /> <RowStyle CssClass="new_fila_exp_ini" /> </asp:GridView> When I click the last button or the ... it goes to the corresponding page but when i click on a previous page i get the following errror: An Error Has Occurred Because A Control With Id $ContentPlaceHolder1$gvExperiencias$ctl01$ctl01' Could Not Be Located Or A Different Control Is assigned to the same ID after postback. If the ID is not assigned, explicitly set the ID property of controls that raise postback events to avoid this error. So the pager does not work correctly. I think it's because of the Image's Id that has to be generated dinamically but i don't know how to do it. Can someone help me?

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  • how to create drop down button like gmail "move to" button?

    - by keisimone
    Hi i have a simple file upload system coded in php. As part of increasing the UI simplicity, i want to have a similar gmail "Move To" button where I can check multiple checkboxes and then after clicking one of the many possible entries in the drop down generated by the button, some postback takes place. Please advise. Thank you. Ideally, would be to use jQuery. though i am not an expert, i have some small experience using jQuery.

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  • asp.net and jquery dialog

    - by _ra
    does anyone know how to use jquery modal dialog in asp.net pages? http://jqueryui.com/demos/dialog/ I've tried creating a simple aspx page, pasted code from the example (http://jqueryui.com/demos/dialog/), it almost works. The dialog briefly shows up and then disappears. It seems that the page is doing a postback. I'm not sure how to stop it, so that the modal dialog stays up.

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  • When developing a MVC project, is the the toolbox really useful?

    - by Knox
    I'm a noobie when it comes to VS, specifically VS 2010. I'm trying to learn MVC 2.0. If you're developing a pure MVC project, it seems like most of the toolbox is not useful. Shouldn't the IDE hide controls that aren't useful? Specifically, I'm looking at the AJAX extensions like Timer and UpdatePanel, but it seems like a lot controls more would require postback.

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  • Iframe height issue

    - by shah
    I have an iframe loaded with dynamic datas.The page doesn't contains a postback.While deleting datas from this page its heights are not decreasing.Why is it so??

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  • Page Refresh Returns to previous page

    - by Rajesh Rolen- DotNet Developer
    I am using server.transfer to redirect from one to another page... lets say when i click on button1 of page1 i redirects to page2 using server.transfer but than when i refresh that page2 , it get postback and redirects me page1 again.. please tell me where i am doing wrong.? I have tried with both.. but result is same server.Transfer("~/admin/mypage.aspx?msg=A",False ) server.Transfer("~/admin/mypage.aspx?msg=A",True )

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