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  • What is the preferred method of refreshing a combo box when the data changes?

    - by Craig Johnston
    What is the preferred method of refreshing a combo box when the data changes? If a form is open and the combo box data is already loaded, how do you refresh the contents of the combo box without the form having to be closed and reloaded? Do you have to do something on the Click event on the combo box? This would seem to be a potential slow down for the app if there is a hit to the database every time someone clicks on a combo box.

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  • LINQ-TO-XML not returning all value

    - by mmcglynn
    I am trying to get all values in the select. using item.Count shows the correct number of values, but only one .Value is returned from the loop. Why? Dim fooXML As XDocument = XDocument.Load(Server.MapPath("xml/foo.xml")) Dim query = _ From c In fooXML...<foobaryear> _ Select c...<event> For Each item In query Response.Write(item.Value) Next

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  • Configuration Element Collection Section

    - by Matt
    I would like to set up a custom app configuration element collection section like this <logSectionGroup> <logSection name="Testttt"> <properties name ="Pride"> <pathName="TestingLog.txt"/> <deleteRetention="100"/> <deleteZeroRetention="5"/> <wildcard="*.txt"/> </properties> <properties name ="Adhoc"> <pathName="blah.txt"/> <deleteRetention="70"/> <deleteZeroRetention="3"/> <wildcard="*.*"/> </properties> </logSection> </logSectionGroup> Is this possible? Properties would be the configuration element, and log section would be the configuration element collection. The problem is, I've only seen where you can have multiple instances of a single element instead of multiple elements. <Section name="Section1"> <Section name="Section1"> <SubSection name="SubSection1"> <Item name="Item1" /> <Item name="Item2" /> </SubSection> <SubSection name="SubSection2"> <Item name="Item1" /> <Item name="Item2" /> </SubSection> </Section> When you use GetElementKey() you have it return element "name" in the above example but how would you return 4 different elements like "pathName" "deleteRetention" etc. Here is my Definition for PropElement Public Class PropElement Inherits ConfigurationElement <ConfigurationProperty("pathName", IsRequired:=True)> _ Public Property PathName() As String Get Return CStr(Me("pathName")) End Get Set(ByVal value As String) Me("pathName") = value End Set End Property <ConfigurationProperty("deleteRetention", DefaultValue:="0", IsRequired:=False)> _ Public Property DeleteRetention() As Integer Get Return CStr(Me("deleteRetention")) End Get Set(ByVal value As Integer) Me("deleteRetention") = value End Set End Property <ConfigurationProperty("deleteZeroRetention", DefaultValue:="0", IsRequired:=False)> _ Public Property DeleteZeroRetention() As Integer Get Return CStr(Me("deleteZeroRetention")) End Get Set(ByVal value As Integer) Me("deleteZeroRetention") = value End Set End Property <ConfigurationProperty("wildcard", DefaultValue:="*.*", IsRequired:=False)> _ Public Property Wildcard() As String Get Return CStr(Me("wildcard")) End Get Set(ByVal value As String) Me("wildcard") = value End Set End Property End Class

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  • Convert Null Value to String - C#.NET

    - by peace
    foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { PropertyItem.SetValue(this, objDataTable.Rows[0][PropertyItem.Name.ToString()], null); } In one of the loops i get this exceptional error: Object of type 'System.DBNull' cannot be converted to type 'System.String'. The error occurs because one of the fields in the database has no value (null), so the string property could not handle it. How can i convert this null to string? I got this solution If you know a shorter or better one, feel free to post it. I'm trying to avoid checking on every loop is current value is null or not.

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  • Webbrowser control and cookies

    - by Mike
    Hello! I have a webbrowser control in my program and what I want to do is to delete all the cookies stored in my computer. The problem is that for example I'm in some site, and then I decide I want to delete all the cookies, so I do it by the command "Kill()" but the problem is that the cookies remain and this site still can recognize me, and to complete the kill command I need to close my program and enter it again. The webbrowser control uses Internet Explorer, and I think when you enter IE it somehow loads all the cookies into it so if you delete your cookies, they remain there. So I'm wondering how can I delete my cookies, completely delete them without the need to close my program and enter it once again. Any help will be appreciated!

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  • How to find the Dynamically added gridview footer control

    - by harold-sota
    I have add controls to my gridview footer, here is the code SGridView.ShowFooter = True For i As Integer = 0 To ctrList.Count Dim ctr As Control = CType(ctrList.Item(i), Control) SGridView.FooterRow.Cells(i + 1).Controls.Add(ctr) Next the ctrList contain Controls textBox, checkbox dropdowlist ect. there is all ok but when i wont to get the text or value or checked value of controls i cant cast the controls in rowcommand event Here is the code: Protected Sub SGridView_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles SGridView.RowCommand If e.CommandName = "Add" Then Dim ctrList As ControlCollection = SGridView.FooterRow.Controls For Each ctr As Control In ctrList If TypeOf ctr Is TextBox Then Dim name As TextBox = CType(ctr, TextBox) Dim val As String = name.Text End If Next End If this excample is for the textBox control. Any idea?

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  • Load an Assembly from Bin in ASP.NET

    - by Pete Michaud
    I have a file name, like "Foo.dll," for a library that I know is in the bin directory. I want to create an Assembly object for it. I'm trying to instantiate this object from a class that's not a page, so I don't have the Request object to get the path. How do I get the path I need to use Assembly.Load()?

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  • icon as an image

    - by Ken
    Hi All, is it possible to use icon file as a image for a button in visual basic? f.e. I have 3 buttons that need to have 3 icons when you click the button the icon of the button needs to be the icon of the form is this posible? btnIcon1 = my.resources.ICO1 btnIcon2 = my.resources.ICO2

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  • .NET generic class instance - passing a variable data type

    - by FerretallicA
    As the title suggests, I'm tyring to pass a variable data type to a template class. Something like this: frmExample = New LookupForm(Of Models.MyClass) 'Works fine Dim SelectedType As Type = InstanceOfMyClass.GetType() 'Works fine frmExample = New LookupForm(Of SelectedType) 'Ba-bow! frmExample = New LookupForm(Of InstanceOfMyClass.GetType()) 'Ba-bow! LookupForm<Models.MyClass> frmExample; Type SelectedType = InstanceOfMyClass.GetType(); frmExample = new LookupForm<SelectedType.GetType()>(); //Ba-bow frmExample = new LookupForm<(Type)SelectedType>(); //Ba-bow I'm assuming it's something to do with the template being processed at compile time but even if I'm off the mark there, it wouldn't solve my problem anyway. I can't find any relevant information on using Reflection to instance template classes either. (How) can I create an instance of a dynamically typed repository at runtime?

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  • How Pick a Column Value from a ListView Row - C#.NET

    - by peace
    How can i fetch the value 500 to a variable from the selected row? One solution would be to get the row position number and then the CustomerID position number. Can you please give a simple solution. SelectedItems means selected row and SubItems means the column values, so SelectedItem 0 and SubItem 0 would represent the value 500. Right? This is how i populate the listview: for (int i = 0; i < tempTable.Rows.Count; i++) { DataRow row = tempTable.Rows[i]; ListViewItem lvi = new ListViewItem(row["customerID"].ToString()); lvi.SubItems.Add(row["companyName"].ToString()); lvi.SubItems.Add(row["firstName"].ToString()); lvi.SubItems.Add(row["lastName"].ToString()); lstvRecordsCus.Items.Add(lvi); }

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  • Deploying asp.net application(.Net4.0) package on to IIS 6.0

    - by Vinod.Nair
    Hi , I have created a asp.net application project in Visual Studio 2010 (.net 4.0). I had published it using Project- Build Deployment Package. It generated .zip file along with files having extension " .deply.cmd", ".SetParameters.xml", ".SourceManifest.xml" and readme.txt, in Application (obj\Release\Package) folder My intension is to host the package on test server which has IIS6.0, Windows Server 2003 R2 x64 Edition service pack 2. It has .net 4.0. I tried by running the cmd file but its showed me an message as below: ERROR: The system was unable to find the specified registry key or value. msdeploy.exe is not found on this machine. Please install Web Deploy before execute the script. any help pl....

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  • problem of setting cache as datatable and reading it

    - by MyHeadHurts
    and this is how i see if my cache is empty all my syntax errors are coming when i am trying to see if the cache is null and if it is to run the stored procedure If RadioButtonList1.SelectedIndex = 0 Then If Cache["netcache"] = null Then bcmd.CommandText = "yearlynetsales" Else btable = cache["netcache"] end if If RadioButtonList1.SelectedIndex = 1 Then If Cache["salescache"] = null Then bcmd.CommandText = "yearlysales" Else btable = cache["salescache"] end if end if this is how i set my cache If RadioButtonList1.SelectedIndex = 0 Then Cache.Insert("netcache", bTable) ElseIf RadioButtonList1.SelectedIndex = 1 Then Cache.Insert("salescache", bTable) ElseIf RadioButtonList1.SelectedIndex = 2 Then Cache.Insert("cxsalescache", bTable) ElseIf RadioButtonList1.SelectedIndex = 3 Then Cache.Insert("cxvaluecache", bTable) ElseIf RadioButtonList1.SelectedIndex = 4 Then Cache.Insert("othersalescache", bTable) ElseIf RadioButtonList1.SelectedIndex = 5 Then Cache.Insert("inssalescache", bTable) End If

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  • Membership.Updateuser not really updating the database.

    - by Shimrod
    Hi everybody, I'm currently working on a membership system for my web application, which is based on forms authentication from the framework. I created some users with the integrated tool, and the login is perfectly working. But now what I want to do is to give administrator the capability to create, modify, delete users. So here is what I've got right now: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim muc As MembershipUserCollection = Membership.GetAllUsers() ComboBox1.DataSource = muc ComboBox1.DataValueField = "UserName" ComboBox1.DataTextField = "UserName" ComboBox1.DataBind() End Sub Protected Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles ComboBox1.SelectedIndexChanged Dim userName As String = ComboBox1.SelectedValue Dim mu As MembershipUser = Membership.GetUser(userName) Dim userRoles As String() = Roles.GetRolesForUser(userName) tbComments.Text = mu.Comment tbEmail.Text = mu.Email lblUserName.Text = mu.UserName End Sub Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click Dim userName As String = ComboBox1.SelectedValue Dim mu As MembershipUser = Membership.GetUser(userName) If Not mu Is Nothing Then Try mu.Comment = tbComments.Text Membership.UpdateUser(mu) mu.Email = tbEmail.Text Membership.UpdateUser(mu) mu.IsApproved = True Membership.UpdateUser(mu) mu = Nothing Catch ex As Exception Console.WriteLine(ex.ToString()) End Try End If DetailPanel.Visible = False End Sub The problem is that the record doesn't seem to be updated in the database. I made the multiple calls to Membership.UpdateUser after reading this blog entry, but it didn't change anything. A strange think I noticed while debugging, is that when I enter the Button1_Click method, Membership.GetUser(userName) returns me values from my precedent attempt ! I don't really understand what I'm missing. Does someone have a clue ? Thanks in advance !

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  • Why doesnt doesnt HTML input of type file not work with Ajax update panel

    - by Sean P
    I have a input of type file and when i try to do a Request.files when the input is wrapped in an update panel...it always returns an empty httpfilecollection. Why??? This is the codebehind: (At HttpContext.Current.Request.Files...its always 0 for the count.) Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click Dim uploads As HttpFileCollection uploads = HttpContext.Current.Request.Files For i As Integer = 0 To (uploads.Count - 1) If (uploads(i).ContentLength > 0) Then Dim c As String = System.IO.Path.GetFileName(uploads(i).FileName) Try uploads(i).SaveAs("C:\UploadedUserFiles\" + c) Span1.InnerHtml = "File Uploaded Sucessfully." Catch Exp As Exception Span1.InnerHtml = "Some Error occured." End Try End If Next i End Sub This example comes from the ASP.Net website...but my application is very similar.

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  • How to override event on a UserControl

    - by Vadim
    Hello! I have a WinForms application (OwnerForm) with some UserControl. When textbox of UserControl is changed, I want to filter content of a OwnerForm. But how can I make it? I don't want to specify OwnerForm inside the user control. I know a solution to add manually handlers for MyUserControl.tb.TextChanged to some functions on a owner form, but I think it's bad way. I'll prefer to have overridable functions, but I can't imagine how to do it. Any suggestions? Thanks in advance,

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  • SQL optional parameters through VB.net

    - by ScaryJones
    I've a document search page with three listboxes that allow multiple selections. They're: Category A Year Category B Only category A is mandatory, the others are optional parameters and might be empty. Each document can belong to multiple options in Category A and multiple options Category B but each document only has one year associated with it. I've kind of got this working through building up a dynamic SQL string but it's messy and I hate using it so I thought I'd ask here if anyone could see an easier way of doing this. An example of the kind of dynamic SQL query i end up with follows: select * from library where libraryID in (select distinct libraryID from categoryAdocs where categoryAdocID in (4)) or year in (2004)

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  • string parse and replace in for loop

    - by reffer
    i have a string that looks like this - "1AL||9CA||34CO||196WY||..." i want to use a for loop or while loop, in which if i have an integer, it should parse this string and delete the value matching that integer. example for above string string = "1AL||9CA||34CO||196WY||..." integer = 34 for ... loop new string = "1AL||9CA||196WY||..." As you can see the integer matched the integer 34 and deleted from one delimeter "||" to th next one. how can i do this?

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  • A potentially dangerous Request.Form value was detected: Dealing with these errors proactively, or a

    - by Albert
    I'm noticing this error more and more in my error logs. I've read through the questions here talking about this error, but they don't address what I would like to do (see below). I'm considering three options, in the order of preference: 1) When submitting a form (I use formviews almost exclusively, if that helps), if potentially dangerous characters are detected, automatically strip them out and submit. 2) When submitting a form, if potentially dangerous characters are detected, alert the user and let them fix it before trying again. 3) After the exception is generated, deal with it and alert the user. I'm hoping one of the first two options might be able to do somewhat globally...I know for the 3rd I'd have to alter a TON of Try-Catch blocks I already have in place. Doable, but labor intensive. I'd rather be proactive about it if at all possible and avoid the exception all together. Perhaps one approach to #1 would be to write a block of code that could loop through all text entry fields in a formview, during the insert/update event, and strip the characters out. I'm ok with that, but I'd rather not have to heavily alter all my Insert/Update events to accomplish this. Or maybe I just create a different class to do the text checking/deleting, and only insert 1 line of code in each Insert/Update event. If anyone can come up with some example code of any of these approaches that would be a help. Thanks for any ideas or information. I'm definitely open to other solutions too; these are only the 3 that came to mind. I can say that I don't want to turn request validation off though.

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  • Unable to create PDB file

    - by Ryan Smith
    For some reason this error started popping up today on one of my projects. Error 1 Unable to write to output file 'C:\MyProject\Release\MyProject.pdb': Unspecified error If I go into advanced compile options and change it to not generate and debug info, my project compiles fine. I have tried setting the permissions on the Release folder to full for everyone, so I would assume it's not a permissions issue. Also, I don't see anything in my log files that would provide me with more information about the issue. Does anyone know why this error would just start showing up or a way to fix it? Thanks. Update: I have rebooted my machine, restarted VS several times and have even completely deleted the existing OBJ file where the issue is happening. It's still giving me the same error. This is a simple one project solution that was working fine just last week. It appears to be an issue with VS trying to build the PDB file because I can delete them out of the Release and Debug folders without issue. When I try rebuilding them VS will start creating the file (about 1.4MB is size) but I still get the error.

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  • connecting to exchange server

    - by MyHeadHurts
    I am using this code to connect to my exchange server. I am trying to retrieve an inbox of basically emails that have not been read however, i am just getting a bunch of gibberish and its reading an email. can you help me modify my code to just read the most recent messages. Try tcpClient.Connect(hostName, 110) Dim networkStream As NetworkStream = tcpClient.GetStream() Dim bytes(tcpClient.ReceiveBufferSize) As Byte Dim sendBytes As Byte() networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("User " + userName + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("Pass " + userPassword + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("STAT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("RETR " + messageNumber + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) returnMessage = Encoding.ASCII.GetString(bytes) EmailContent.Text = returnMessage sendBytes = Encoding.ASCII.GetBytes("QUIT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) tcpClient.Close() Catch ex As Exception EmailContent.Text = "Could not retrieve email or your inbox is empty" End Try

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