Web Forms :: Require Go Which File Which Line No Error And How To Remove This
Sep 17, 2010
i require go which file which line no error and how ro remove thsiSystem.NullReferenceException: Object reference not set to an instance of an object
at System.Web.UI.WebControls.ListBox.SelectMultiple (System.String[] values) [0x00000] in <filename unknown>:0
at System.Web.UI.WebControls.ListBox.LoadPostData (System.String postDataKey, System.Collections.Specialized.NameValueCollection postCollection) [0x00000] in <filename unknown>:0
at System.Web.UI.WebControls.ListBox.System.Web.UI.IPostBackDataHandler.LoadPostData (System.String postDataKey, System.Collections.Specialized.NameValueCollection postCollection) [0x00000] in <filename unknown>:0
at System.Web.UI.Page.ProcessPostData (System.Collections.Specialized.NameValueCollection data, Boolean second) [0x00000] in <filename unknown>:0
at System.Web.UI.Page.ProcessPostData () [0x00000] in <filename unknown>:0
at System.Web.UI.Page.InternalProcessRequest () [0x00000] in <filename unknown>:0
at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
Basically I want to take the following:And make it match the styling of the rest of the application.I am creating a custom error page in my C# based project and I want it to be able to show the same information that is displayed in the ASP.NET default error page. From fiddling with reflector I can see that this is generated through HttpException.GetHtmlErrorMessage() but when I try to use this in my exception it returns null.
In my asp web page, there is a multiline textbox. And upon a button click from the same page I need to delete the last row or line from the multiline textbox. How is that possible.
When I deploy my project to inetpub/wwwroot/ directory, and trying to run my index.aspx file though browser, it shows this error:Line 44: < authentication mode="Windows" / >
Source File: c:inetpubwwwrootconversionweb.config Line: 44 -------------------------------------------------------------------------------- Version Information: Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3618 I don't know what the problem is. How can this be fixed?
I m uploading a file and I want to read that file line by line. I have 200 users accessing that application at one time and I have more than 300 lines in a text file to read. If I do it in a normal code, it may crash. So, what are the ways to do this application? Web services or COM+. which is the better way? I dont want my application to crash at any point.
Many times I remove in the code window (Using Replace and Regular Expression). Is ther a quicker way of doing this without writing a macro? The best way would be a shortcut key.
I have VS 2010 professional. I am trying to open "ASP.Net Configuration" through Project -> ASP.Net Configuration.
It pops up the Notification about the ASP.Net Development Server localhost but doesn't open ASP.Net Configuration in the default browser.I clicked on the Root Url (by double clicking on the 'development server' at the right bottom from Notification Manager).
It throws following error
"An error was encountered. Please return to the previous page and try again."
Clicking on "How do i use this tool".It opened page with error.
However when i try to retreive it and use it i get this error: The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.
XML Parsing Error: no element foundLocation: [URL] Number 1, Column 1:where as on local there is no error the code contains: protected void Button1_Click(object sender, EventArgs e) { try { SqlConnection con = new SqlConnection(WebConfigurationManager.ConnectionStrings["PintooConnection"].ConnectionString); DataSet Ds = new DataSet(); SqlDataAdapter Da = new SqlDataAdapter("Select * from Emails", con); Da.Fill(Ds); for (int i = 0; i < Ds.Tables[0].Rows.Count; i++) { Label1.Text = Label1.Text + i.ToString() ++ Ds.Tables[0].Rows[i][1].ToString() + " <br />"; SqlConnection test = new SqlConnection(WebConfigurationManager.ConnectionStrings["PintooConnection"].ConnectionString); string qry = "Insert into test values ('" + Ds.Tables[0].Rows[i][1].ToString() + "','" + Ds.Tables[0].Rows[i][2].ToString() + "','" + Ds.Tables[0].Rows[i][3].ToString() + "','" + Ds.Tables[0].Rows[i][4].ToString() + "','" + Convert.ToDateTime(Ds.Tables[0].Rows[i][5].ToString()) + "')"; SqlCommand cmd = new SqlCommand(qry, con); con.Open(); cmd.ExecuteNonQuery(); con.Close(); cmd.Dispose(); } } catch (Exception ex) { Label1.Text = ex.ToString(); } }aspx code is here: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="testforconnection.aspx.cs" Inherits="Admin_testforconnection" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ><html xmlns=[URL]><head runat="server"> <title></title></head><body> <form id="form1" runat="server"> <div> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /> </div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </form></body></html>I have also tried this<![CDATA[<% Response.ContentType = "text/HTML";>but the problem is same.</textarea></p> <input type='hidden' name='ID[1]' value='178042' /> <input type='hidden' name='URL[1]' value=[URL] /> <input type='hidden' name='CAT[1]' value='ASP.NET' /> <input type='hidden' name='BOARD[1]' value='stackoverflow' /> <input type='hidden' name='P_DATE[1]' value='Jun 18 10 at 4:43' /> <input type='hidden' name='RANDOM[1]' value='oP15QfJ0c' /> <input type='hidden' name='REPLIES[1]' value='3' /> <input type='hidden' name='USER[1]' value='aziz' /> <p><input class=subject type='text' size='90' name='SUBJECT[1]' value='c# - How do you access the Source Error, Source File and Line Number of an exception to use in a custom error page?' /><select name='INDEXED[1]'><option value='1' selected>UPDATE</option><option value='2'>DELETE</option></select>Jun 18 10 at 4:43 - Replies: 3 CAT: ASP.NET<a target=_blank href="[URL]>View</a></p> <p> <textarea rows=10 cols=100 name='POST[1]' onfocus='setSelRange(this, 0, 0)'/>Basically I want to take the following:
And make it match the styling of the rest of the application. I am creating a custom error page in my C# based project and I want it to be able to show the same information that is displayed in the ASP.NET default error page. From fiddling with reflector I can see that this is generated through HttpException.GetHtmlErrorMessage() but when I try to use this in my exception it returns null.
i am using below code for reading the csv fie..by using this code, it's reading the csv file first line onwards, but i want to read the csv file from 2nd line onwards
I am new in asp.net and c#. I am good at php and understands the logic. But i have no idea what is error in this.when I just include one line ' using System;' it shows error. I also tried c# page putting codebeign and calll it but still same error.Here is my test html page and action c# page
I'm trying to execute a .bat file in my web page when a user clicks a button. The normal command I would run in the command window is as follows. abc.bat 1 Where 1 is project number which is dynamically assigned according to the scenario in the program. Also the .bat file is inside the folder D:Test1. My code looks like this.....
When I run the .bat file the data should be generated for project and stored in a database. When I run this in command line it works fine. But when I run the above code in the asp.net web page it executes without any errors but does not store any values in the database. Have I defined the project name, arguments correctly in the above scenario?
I am trying to zip files using command line Below is the code I am using.
Dim filePath As String = "C:Program FilesWinZipWINZP32.exe" Dim outputfile As String = "D:GeneratedReport25.zip" Dim csvfile As String = "D: est1" Dim startInfo As System.Diagnostics.ProcessStartInfo startInfo = New System.Diagnostics.ProcessStartInfo(filePath, "winzip32 -min -a " & outputfile & " " & csvfile) startInfo.UseShellExecute = False startInfo.WindowStyle = Diagnostics.ProcessWindowStyle.Normal startInfo.CreateNoWindow = False System.Diagnostics.Process.Start(startInfo)
I am getting the Win32 Exception. (System cannot find the file specified.)
I have read plenty of tutorials on taking a datagrid to a text file, but I haven't seen anything about taking a single cell from a datagrid, formatting it, and writing it to a text file. Is this possible, am I going about it wrong?
