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  • Value cannot be null.Parameter name: key when databind in ASP.NET

    - by Yongwei Xing
    Hi all I am triing to bind the data to a listbox from sql server then got the error "Value cannot be null.Parameter name: key" sqlCommand = "SELECT [Country] FROM [tbl_LookupCountry] where [Country] IS NOT NULL"; SqlConnection sqlConCountry = new SqlConnection(connectString); SqlCommand sqlCommCountry = new SqlCommand(); sqlCommCountry.Connection = sqlConCountry; sqlCommCountry.CommandType = System.Data.CommandType.Text; sqlCommCountry.CommandText = sqlCommand; sqlCommCountry.CommandTimeout = 300; sqlConCountry.Open(); reader = sqlCommCountry.ExecuteReader(); ddlCountry.DataSource = reader; ddlCountry.DataBind(); sqlConCountry.Close(); Does anyone meet this problem before?

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  • asp code for upload data

    - by vicky
    hello everyone i have this code for uploading an excel file and save the data into database.I m not able to write the code for database entry. someone please help <% if (Request("FileName") <> "") Then Dim objUpload, lngLoop Response.Write(server.MapPath(".")) If Request.TotalBytes > 0 Then Set objUpload = New vbsUpload For lngLoop = 0 to objUpload.Files.Count - 1 'If accessing this page annonymously, 'the internet guest account must have 'write permission to the path below. objUpload.Files.Item(lngLoop).Save "D:\PrismUpdated\prism_latest\Prism\uploadxl\" Response.Write "File Uploaded" Next Dim FSYSObj, folderObj, process_folder process_folder = server.MapPath(".") & "\uploadxl" set FSYSObj = server.CreateObject("Scripting.FileSystemObject") set folderObj = FSYSObj.GetFolder(process_folder) set filCollection = folderObj.Files Dim SQLStr SQLStr = "INSERT ALL INTO TABLENAME " for each file in filCollection file_name = file.name path = folderObj & "\" & file_name Set objExcel_chk = CreateObject("Excel.Application") Set ws1 = objExcel_chk.Workbooks.Open(path).Sheets(1) row_cnt = 1 'for row_cnt = 6 to 7 ' if ws1.Cells(row_cnt,col_cnt).Value <> "" then ' col = col_cnt ' end if 'next While (ws1.Cells(row_cnt, 1).Value <> "") for col_cnt = 1 to 10 SQLStr = SQLStr & "VALUES('" & ws1.Cells(row_cnt, 1).Value & "')" next row_cnt = row_cnt + 1 WEnd 'objExcel_chk.Quit objExcel_chk.Workbooks.Close() set ws1 = nothing objExcel_chk.Quit Response.Write(SQLStr) 'set filobj = FSYSObj.GetFile (sub_fol_path & "\" & file_name) 'filobj.Delete next End if End If plz tell me how to save the following excel data to the oracle databse.any help would be appreciated

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  • ASP.NET Session and target blank

    - by Lennart
    Hi I have seen a few posts regarding Session and using target blank to open a new page. But I still don´t get it. Im working with an application which opens from a link on an Intranet site. I guess it uses target blank to get it in a new window. (I don´t have the source). If both windows are closed (My application and the Intranet site) it seems like the Session is destroyed. I need that to happen when my application is closed. (ie, still leaving the Intranet site open). If I use the site in my testenvironment without opening it from a page with target blank, it seems like I get the expected behaviour. Web.config has: pages enableSessionState="true" Thanks

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  • Label,TextBox,Asp.net

    - by viahal
    I have a label and a text box associated to it . I have added some text in text box which is invisible at first... now I want to display the content after I go On the label...

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  • Bitwise operators versus .NET abstractions for bit manipulation in C# prespective

    - by Leron
    I'm trying to get basic skills in working with bits using C#.NET. I posted an example yesterday with a simple problem that needs bit manipulation which led me to the fact that there are two main approaches - using bitwise operators or using .NET abstractions such as BitArray (Please let me know if there are more build-in tools for working with bits other than BitArray in .NET and how to find more info for them if there are?). I understand that bitwise operators work faster but using BitArray is something much more easier for me, but one thing I really try to avoid is learning bad practices. Even though my personal preferences are for the .NET abstraction(s) I want to know which i actually better to learn and use in a real program. Thinking about it I'm tempted to think that .NET abstractions are not that bad at, after all there must be reason to be there and maybe being a beginner it's more natural to learn the abstraction and later on improve my skills with low level operations, but this is just random thoughts.

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  • Reading an embedded file from an ASP.NET Custom Server Control an rendering it

    - by Andreas Grech
    I currently have a file "abc.htm" in my Custom Server Control Project and it's Build Action is set to Embedded Resource. Now in the RenderContents(HtmlTextWriter output) method, I need to read that file and render it on the website. I am trying the following but it's to no avail: protected override void RenderContents(HtmlTextWriter output) { var providersURL = Page.ClientScript.GetWebResourceUrl(typeof (OpenIDSel), "OpenIDSelector.Providers.htm"); var fi = new FileInfo(providersURL); // <- exception here //the remaining code is to possibly render the file } This is an example of how the providersURL is: /WebResource.axd?d=kyU2OiYu6lwshLH4pRUCUmG-pzI4xDC1ii9u032IPWwUzMsFzFHzL3veInwslz8Y0&t=634056587753507131 FileInfo is throwing System.ArgumentException: Illegal characters in path.

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  • Set Masterpage from Global.asax in ASP.NET

    - by StefanE
    Hi, I want to set the Masterpage property in Global.asax. This is what I have done but I get a NullReferenceException on the first line. Any ideas how to do this? protected void Application_PreSendRequestContent(Object sender, EventArgs e) { System.Web.UI.Page page = System.Web.HttpContext.Current.Handler as System.Web.UI.Page; if (Session["lang"] == "eng") { page.MasterPageFile = "SideMasterPageEng.master"; } }

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  • Asp.net mvc retriev images from db and display on Page

    - by Trey Carroll
    //Inherits="System.Web.Mvc.ViewPage<FilmFestWeb.Models.ListVideosViewModel>" <h2>ListVideos</h2> <% foreach(BusinessObjects.Video vid in Model.VideoList){%> <div class="videoBox"> <%= Html.Encode(vid.Name) %> <img src="<% vid.ThumbnailImage; %>" /> </div> <%} %> //ListVideosViewModel public class ListVideosViewModel { public IList<Video> VideoList { get; set; } } //Video public class Video { public long VideoId { get; set; } public long TeamId { get; set; } public string Name { get; set; } public string Tags { get; set; } public string TeamMembers { get; set; } public string TranscriptFileName { get; set; } public string VideoFileName { get; set; } public int TotalNumRatings { get; set; } public int CumulativeTotalScore { get; set; } public string VideoUri { get; set; } public Image ThumbnailImage { get; set; } } I am getting the "red x" that I usually associate with image file not found. I have verified that my database table shows <binary data> after the stored proc that uploads the image executes. Any insight or advice would be greatly appreciated.

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  • ASP.NET client side validation with dataannotations - javascript minimumlength zero

    - by Kordonme
    Hi! I'm doing client side validation on a project I'm working on. Everything works, except for the minimumlength property of the StringLength attribute (it works when submitting and a serverside validation is done): [StringLength(50, MinimumLength = 6)] The javascript generated by Html.EnableClientValication(); is the following: // snip {"FieldName":"User.Password","ReplaceValidationMessageContents":true,"ValidationMessageId":"User_Password_validationMessage","ValidationRules":[{"ErrorMessage":"The field Password must be a string with a minimum length of 6 and a maximum length of 50.","ValidationParameters":{"minimumLength":0,"maximumLength":50},"ValidationType":"stringLength"}]}],"FormId":"form0","ReplaceValidationSummary":false}) The important thing is here: {"minimumLength":0,"maximumLength":50} It produces javascript with the wrong minimumproperty. You guys have a hint? Is this a possible bug?

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  • Display virtual keyword asp.net for password

    - by Nicole
    Hi! I have a login page with an input of type "password" I would like to have a virtual keyboard to enter the password. I've searched and I found the jquery script for virtual keyboard. The code said to add this to my page $('input[type=password]').keyboard({ layout: "qwerty", customLayout: [["q w e r t y {bksp}", "Q W E R T Y {bksp}"], ["s a m p l e {shift}", "S A M P L E {shift}"], ["{accept} {space} {cancel}", "{accept} {space} {cancel}"]] }); but I cant make it work!!!! nothing happens when y set focus on my password control. Any suggestions?? thank you!! Nicole.

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  • response.write only working IE for ASP.NET

    - by slowlycooked
    I'm using uploadify (http://www.uploadify.com/) to upload video to my site then convert them into *.flv using ffmpeg and play preview. But it dosen't fully working with firefox, chrome or safari. uploadify provides a onComplete interface, so when the script (.ashx, .php) used on your site for saving uploaded files. you can use response.write("blabla") or (echo "blabla") to invoke the javascript function that registed as OnComplete. i have test with few video files like avi, mpg, mp4, they are less then 50mb,and they all worked with all 4 browsers. However, when i was trying to upload a 75mb mp4 file, it worked in IE, but didn't working in other three. I can see the .flv file has been create in the upload folder, i can see debug messsage output after response.write("blabla"), but the javascript function was not invoked. i.e. the preview didn't play. anyone knows why? is there a timeout or something on response.write so after a period of time it wont work? e.g. 75mb file took longer time to convert than other smaller size file i tried. thansk

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  • jQuery Templates vs Partial Views in ASP.NET MVC

    - by Jaco Pretorius
    I'm taking a look at jQuery templates. It looks really interesting - easy syntax, easy to use, very clean. However, I can't really see why it's better to use jQuery templates instead of simply fetching partial views via AJAX. It simply seems like the partial views would be much easier to maintain and helps to avoid duplication of code. I want to use jQuery templates. But when would it be better than partial views?

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  • Controls.remove() method not working in asp.net

    - by user279521
    I have a web app where the user can create dynamic textboxes at run time. When the user clicks SUBMIT, the form sends data to the database and I want remove the dynamic controls. The controls are created in the following code: Table tb = new Table(); tb.ID = "tbl"; for (i = 0; i < myCount; i += 1) { TableRow tr = new TableRow(); TextBox txtEmplName = new TextBox(); TextBox txtEmplEmail = new TextBox(); TextBox txtEmplPhone = new TextBox(); TextBox txtEmplPosition = new TextBox(); TextBox txtEmplOfficeID = new TextBox(); txtEmplName.ID = "txtEmplName" + i.ToString(); txtEmplEmail.ID = "txtEmplEmail" + i.ToString(); txtEmplPhone.ID = "txtEmplPhone" + i.ToString(); txtEmplPosition.ID = "txtEmplPosition" + i.ToString(); txtEmplOfficeID.ID = "txtEmplOfficeID" + i.ToString(); tr.Cells.Add(tc); tb.Rows.Add(tr); } Panel1.Controls.Add(tb); The Remove section of the code is: Table t = (Table)Page.FindControl("Panel1").FindControl("tbl"); foreach (TableRow tr in t.Rows) { for (i = 1; i < myCount; i += 1) { string txtEmplName = "txtEmplName" + i; tr.Controls.Remove(t.FindControl(txtEmplName)); string txtEmplEmail = "txtEmplEmail" + i; tr.Controls.Remove(t.FindControl(txtEmplEmail)); string txtEmplPhone = "txtEmplPhone" + i; tr.Controls.Remove(t.FindControl(txtEmplPhone)); string txtEmplPosition = "txtEmplPosition" + i; tr.Controls.Remove(t.FindControl(txtEmplPosition)); string txtEmplOfficeID = "txtEmplOfficeID" + i; tr.Controls.Remove(t.FindControl(txtEmplOfficeID)); } } However, the textboxes are still visible. Any ideas?

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  • asp.net mvc HttpPostedFileBase getting file extension

    - by mazhar kaunain baig
    public string ContructOrganizationNameLogo(HttpPostedFileBase upload, string OrganizationName, int OrganizationID,string LangName) { var UploadedfileName = Path.GetFileName(upload.FileName); string type = upload.ContentType; } I want to get the extension of the file to dynamically generate the name of the file.One way i will use to split the type. but can i use HttpPostedFileBase object to get the extension in the clean way?

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  • routing in asp.net mvc.

    - by andrew Sullivan
    I have a route routes.MapRoute("BuildingProject", "BuildingProject/{action}/{id}", new { controller = "Home", action = "Index", id = "" }); i want it to behave like default route ie for url that starts with BuildingProject like http://localhost:4030/BuildingProject/DeleteAll. I tried routes.MapRoute("BuildingProject", "BuildingProject/{action}/{id}", new { controller = "Home", action = "", id = "" }); It worked.But on typing localhost:4030/BuildingProject it is not redirecting to it's Index but showing error. .How to do this.

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  • asp.net mvc crazy error

    - by bongoo
    Hi there im having a weird error which is related to an earlier post , I am checking if a file exists before downloading. This works for pdf's but not for any other type of document here is my controller action and the typical path for a pdf and a powerpoint file , the powerpoint does not work ~/Documents//FID//TestDoc//27a835a5-bf70-4599-8606-6af64b33945d/FIDClasses.pdf ~/Documents//FID//pptest//ce36e7a0-14de-41f3-8eb7-0d543c7146fe/PPttest.ppt [UnitOfWork] public ActionResult Download(int id) { Document doc = _documentRepository.GetById(id); if (doc != null) { if (System.IO.File.Exists(Server.MapPath(doc.filepath))) { _downloadService.AddDownloadsForDocument(doc.document_id, _UserService.CurrentUser().user_id); return File(doc.filepath, doc.mimetype, doc.title); } } return RedirectToAction("Index"); }

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  • ASP.NET Ajax partial postback and jQuery problem

    - by chromaloop
    A control contains some HTML and some jQuery to handle a fancy tooltip to display when you click an image within a div. The control is then used on several different pages, sometimes within an updatePanel, sometimes not. I have the following code to handle loading the jQuery after a partial postback when the control is displayed within an update panel. Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); function EndRequestHandler(sender, args) { $('img.ormdShipping').each(function(){ $(this).qtip({ // some qtip options go here }) }); } Problem is, the jQuery doesn't load when the control is used anywhere other than an updatePanel. Do I need a second function that's triggered outside of the EndRequestHandler?

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  • a simple secenerio to implement java script asp.net C#, question rephrased

    - by user287745
    i had asked this question before but got no answer correct. so, this is a simple thing textbox.text='user typing'; button:-store the value to a variable and a database. very simple nothing to it but there should be no post back, that is the page must not load again, try ajax? tried it not working i must a lot of time trying to implement this using java script ajax and read many many post, but for some reason i cannot implement the functionality correctly. please help. thank you

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  • Display Computer Info on an ASP.NET Page

    - by Gene
    I want to build a page for end users to visit (in our MPLS Network) and it show the following information in regards to them: Computer Name OS Disk Space Memory IP Address Active Directory User Name Password Expiration Time (As defined by Global Policy) Maybe a few other things such as Trend Micro Office current version vs. their version, # of MS Updates needed (we utilize WSUS), and a few other things in the future. My question is how would I pull this information from the user when they visit the page? What is the proper function for this? Anyone have examples they wish to share for me to learn by if possible?

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