ASPForums.Net RSS Feedhttp://www.aspforums.net/Handlers/RSS.ashxLatest additions to the content that appears on ASPForums.Net(c) 2017 www.aspforums.com. All rights reserved.Where to declare Session variable in ASP.Net? Global.ASAX?<p>&nbsp;</p> <pre class="brush: html">Hi Sir, I heard that Global.asax file is optional in asp.net web application. But, if we need to declare any session variables in my website, do i really need to add Global.asax file and initialize session variables inside Session_Start() ? Please suggest. Kiran</pre> <p>&nbsp;</p>http://www.aspforums.net/Threads/523283/Where-to-declare-Session-variable-in-ASPNet-GlobalASAX/http://www.aspforums.net/Threads/523283/Where-to-declare-Session-variable-in-ASPNet-GlobalASAX/Mon, 02 Nov 2015 07:12:07 GMTWhat is ViewState its Features Usage and Description in ASP.Net<p><strong>Hi</strong></p> <p><strong>I used these code in my page</strong></p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <pre class="brush: csharp"> string data = Server.UrlDecode(Request.QueryString[&#34;BehCode&#34;]); _cn.Open(); _cmd.Parameters.AddWithValue(&#34;@image&#34;, filename); _cmd.Parameters.AddWithValue(&#34;@Behcode&#34;, data); _cmd.Parameters.AddWithValue(&#34;@id&#34;, Convert.ToInt32(ViewState[&#34;Id&#34;])); int ID = Convert.ToInt32(_cmd.ExecuteScalar()); if (ID &gt; 0) { ViewState[&#34;Id&#34;] = ID.ToString(); } _cn.Close(); </pre> <p><strong>I don't any thing about ViewState&nbsp; what dose this code do?</strong></p> <p><strong>can you explain about it </strong></p> <p><strong>Best Regards</strong></p> <p>&nbsp;</p>http://www.aspforums.net/Threads/212994/What-is-ViewState-its-Features-Usage-and-Description-in-ASPNet/http://www.aspforums.net/Threads/212994/What-is-ViewState-its-Features-Usage-and-Description-in-ASPNet/Wed, 05 Dec 2012 01:22:24 GMTWhat is this error<p>An unhandled exception of type 'System.StackOverflowException' occurred in DataAccessLayer.DLL</p>http://www.aspforums.net/Threads/114310/What-is-this-error/http://www.aspforums.net/Threads/114310/What-is-this-error/Wed, 11 Jan 2012 00:13:11 GMTWhat is the Default Session TimeOut in ASP.Net and from where I can change it<p>hi,</p> <p>&nbsp;&nbsp; what is default session time out in asp.net, please let me know were i can able to put the code in the application.</p> <p>&nbsp;</p> <p>thanks in advance.</p>http://www.aspforums.net/Threads/136119/What-is-the-Default-Session-TimeOut-in-ASPNet-and-from-where-I-can-change-it/http://www.aspforums.net/Threads/136119/What-is-the-Default-Session-TimeOut-in-ASPNet-and-from-where-I-can-change-it/Wed, 12 Dec 2012 05:03:22 GMTWhat is Service Contract and Operational Contract Attributes in WCF Service<p>Hi</p> <p>Can any one give me an idea about service contract and operational contract in details</p> <p>Whether Service contract can be applied to class or only to the interface.</p> <p>What are the advantage of the service contract and operational contract in addition.</p> <p>thanks</p>http://www.aspforums.net/Threads/207527/What-is-Service-Contract-and-Operational-Contract-Attributes-in-WCF-Service/http://www.aspforums.net/Threads/207527/What-is-Service-Contract-and-Operational-Contract-Attributes-in-WCF-Service/Tue, 07 May 2013 04:39:08 GMTWhat is of this.Page.Controls.Add method in ASP.Net<pre class="brush: sql">sir what is the use of </pre> <pre class="brush: sql"> this.Page.Controls.Add(SqlDataSource1);</pre> <pre class="brush: sql">in the following code.</pre> <pre class="brush: sql">&nbsp;</pre> <pre class="brush: sql"> protected void ImageButton1_Click(object sender, ImageClickEventArgs e) { SqlDataSource SqlDataSource1 = new SqlDataSource(); this.Page.Controls.Add(SqlDataSource1); SqlDataSource1.ConnectionString = ConfigurationManager.ConnectionStrings[&#34;ConnectionString&#34;].ConnectionString; SqlDataSource1.SelectCommand = &#34;SELECT * FROM users WHERE ElectionId =&#39;&#34; + this.TextBox1.Text.Trim() + &#34;&#39;&#34;; this.GridView1.DataSource = SqlDataSource1; this.GridView1.DataBind(); this.GridView1.Visible = true; }</pre> <p>&nbsp;</p>http://www.aspforums.net/Threads/869677/What-is-of-thisPageControlsAdd-method-in-ASPNet/http://www.aspforums.net/Threads/869677/What-is-of-thisPageControlsAdd-method-in-ASPNet/Wed, 08 May 2013 01:48:22 GMTWhat is DataBinder.Eval in ASP.Net<p>i have a doubt in this line..</p> <p>can u tell me what this line will do the operation</p> <pre class="brush: vb">&lt;%#&#34;default.aspx?UserId=&#34;+DataBinder.Eval(Container.DataItem,&#34;UserId&#34;) %&gt;&#39;&gt; &lt;%#Eval(&#34;UserName&#34;) %&gt;</pre> <p><br /><br /></p>http://www.aspforums.net/Threads/341945/What-is-DataBinderEval-in-ASPNet/http://www.aspforums.net/Threads/341945/What-is-DataBinderEval-in-ASPNet/Wed, 31 Oct 2012 03:22:13 GMTUnderstand the usage of AJAX jQuery SilverLight and MVC<p>sir i not able to understand the usage of ajax, j query ,silverlight and mvc.</p> <p>i studied lot but not having clear idea. i am begineer.</p> <p>pls give simple definitions for each.</p> <p>for what purpose we using each one.</p> <p>and also mvc is wat?</p> <p>&nbsp;</p>http://www.aspforums.net/Threads/554896/Understand-the-usage-of-AJAX-jQuery-SilverLight-and-MVC/http://www.aspforums.net/Threads/554896/Understand-the-usage-of-AJAX-jQuery-SilverLight-and-MVC/Thu, 24 Jan 2013 03:59:12 GMTThe ConnectionString property has not been initialized error<p>Hi folks,</p> <p>I am getting above mentioned error when I try to run the following code: </p> <pre class="brush: vb"> Private strConnString As String = ConfigurationManager.ConnectionStrings(&#34;conString&#34;).ConnectionString Private con As New SqlConnection(strConnString) Private pID As Integer <br />&#39;FIRST SECTION Dim query As String = &#34;query&#34; Dim cmd As New SqlCommand(query) cmd.Parameters.Add(&#34;@pID&#34;, SqlDbType.Int).Value =pID Using con Using sda As New SqlDataAdapter() Try cmd.Connection = con Catch ex As Exception Response.Write(&#34;Error&#34; &amp; ex.Message) Finally con.Close() End Try sda.SelectCommand = cmd Using ds As New DataSet() sda.Fill(ds) &#39;output End Using End Using End Using<br /><br />&#39;SECOND SECTION Dim cmd2 As New SqlCommand(&#34;query&#34;, con) Try con.Open() cmd2.ExecuteNonQuery() Dim reader As SqlDataReader = cmd2.ExecuteReader() While reader.Read() Dim rr As String = reader.Item(&#34;dID&#34;).ToString Dim returnedRows As String = reader.FieldCount.ToString() If rr = &#34;True&#34; Then &#39;output ElseIf rr = &#34;False&#34; Then &#39;output End If End While reader.Close() Catch ex As Exception Response.Write(&#34;error&#34; &amp; ex.Message) &#39;Error is beign displayed here: The ConnectionString property has not been initialized Finally con.Close() End Try </pre> <p>The error is coming from the second SQL cmd but if I comment out the first section; the second section runs fine.</p> <p>I must have made another basic error but I just can't figure out what it is. Any help would be great. Thanks.</p>http://www.aspforums.net/Threads/153809/The-ConnectionString-property-has-not-been-initialized-error/http://www.aspforums.net/Threads/153809/The-ConnectionString-property-has-not-been-initialized-error/Wed, 01 Aug 2012 09:54:53 GMTText box validation<p>Which Regex do I use so the user can't enter in all caps in the textbox?</p> <p><strong>I want...</strong></p> <p><strong>Now is the time</strong></p> <p>Don't want this...</p> <p>NOW IS THE TIME</p> <p>&nbsp;</p> <p>&nbsp;</p>http://www.aspforums.net/Threads/561071/Text-box-validation/http://www.aspforums.net/Threads/561071/Text-box-validation/Tue, 14 Feb 2012 05:16:35 GMTSaving a file into special folder when File is downloaded on users machine in ASP.Net<p>I need to save a file into special folder.</p> <pre class="brush: csharp">if (TextBox1.Text == s) </pre> <pre class="brush: csharp">{ MessageBoxResult mbr = MessageBox.Show(this, &#34;Do you want to save file?&#34;, &#34;saved&#34;, MessageBoxButton.YesNoCancel); // if (mbr == MessageBoxResult.Yes) // { // //string path = string.Empty; // string path; // path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + &#34;\\abc\\File&#34;; // if (!Directory.Exists(path)) // Directory.CreateDirectory(path); // }</pre> <pre class="brush: csharp">It creates a folder abc if it doen&#39;t exist, i need to save s where s is a textfile.</pre> <p>&nbsp;</p>http://www.aspforums.net/Threads/631769/Saving-a-file-into-special-folder-when-File-is-downloaded-on-users-machine-in-ASPNet/http://www.aspforums.net/Threads/631769/Saving-a-file-into-special-folder-when-File-is-downloaded-on-users-machine-in-ASPNet/Mon, 02 Jul 2012 06:05:48 GMTSave downloaded file to specific folder on users machine in ASP.Net<p>how to save a text into a specific folder of computer(in document)&nbsp;by default,&nbsp;when the user clicks yes(for,Do you want to save the file?)&nbsp;to save a file into his computer? If the folder doesnot exist create and save the textfile?</p>http://www.aspforums.net/Threads/173139/Save-downloaded-file-to-specific-folder-on-users-machine-in-ASPNet/http://www.aspforums.net/Threads/173139/Save-downloaded-file-to-specific-folder-on-users-machine-in-ASPNet/Tue, 26 Jun 2012 23:55:39 GMTSystem.NullReferenceException Error when finding control in Row Updating event of ASP.Net GridView<p>i got an error here in below line of code&nbsp; :</p> <p><em>Dim tempID As String = DirectCast(grdMaster.Rows(e.RowIndex).FindControl("tempID"), Label).Text</em></p> <p>ERROR IS : <span style="font-family: Arial,Helvetica,Geneva,SunSans-Regular,sans-serif;">System.NullReferenceException: Object reference not set to an instance of an object.</span></p> <p>&nbsp;</p> <p>&nbsp;</p> <p>my code is :</p> <p>&nbsp;</p> <p>Protected Sub grdMaster_rowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles grdMaster.RowUpdating<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim conStr As String = ConfigurationManager.ConnectionStrings("conStr").ConnectionString<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim con1 As SqlConnection = New SqlConnection(conStr)<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim tempID As String = DirectCast(grdMaster.Rows(e.RowIndex).FindControl("tempID"), Label).Text<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim grpName As String = DirectCast(grdMaster.Rows(e.RowIndex).FindControl("group"), TextBox).Text<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim usrName As String = DirectCast(grdMaster.Rows(e.RowIndex).FindControl("user"), TextBox).Text<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim str As String = "update MMM_REF_GROUP_USER set grpId=@groupId, usrId=@userId where tempID=@tempId "<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim cmd As SqlCommand = New SqlCommand(str, con1)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cmd.Parameters.Add("@tempId", SqlDbType.Int).Value = tempID<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cmd.Parameters.Add("@grpId", SqlDbType.NVarChar).Value = grpName<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cmd.Parameters.Add("@usrId", SqlDbType.NVarChar).Value = usrName<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; grdMaster.EditIndex = -1<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; grdMaster.DataSource = GetDataItem(cmd)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; grdMaster.DataBind()<br /><br /><br />&nbsp;&nbsp;&nbsp; End Sub</p>http://www.aspforums.net/Threads/441377/SystemNullReferenceException-Error-when-finding-control-in-Row-Updating-event-of-ASPNet-GridView/http://www.aspforums.net/Threads/441377/SystemNullReferenceException-Error-when-finding-control-in-Row-Updating-event-of-ASPNet-GridView/Fri, 06 Jul 2012 09:23:58 GMTSystem.FormatException: Input string was not in a correct format while parsing value to integer and decimal in ASP.Net<p>hi</p> <p>I used below code to conver textbox value to int:</p> <pre class="brush: csharp">if (!IsPostBack) { int rahn2 = int.Parse(Txtrahn2.Text); int rahn1 = int.Parse(Txtrahn1.Text); } </pre> <p>but this error happen:</p> <h1>Server Error in '/' Application.</h1> <hr size="1" width="100%" /> <h2><em>Input string was not in a correct format.</em></h2> <p><font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif "> <strong> Description: </strong>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. <strong> Exception Details: </strong>System.FormatException: Input string was not in a correct format. <strong>Source Error:</strong> </font></p> <table width="100%" bgcolor="#ffffcc"> <tbody> <tr> <td> <pre><font color="red">Line 27: int rahn2 = int.Parse(Txtrahn2.Text); </font>Line 28: int rahn1 = int.Parse(Txtrahn1.Text); Line 29: }</pre> </td> </tr> </tbody> </table> <p>Best regards</p> <p>neda</p>http://www.aspforums.net/Threads/152381/SystemFormatException-Input-string-was-not-in-a-correct-format-while-parsing-value-to-integer-and-decimal-in-ASPNet/http://www.aspforums.net/Threads/152381/SystemFormatException-Input-string-was-not-in-a-correct-format-while-parsing-value-to-integer-and-decimal-in-ASPNet/Mon, 27 Mar 2017 11:06:40 GMTStore date which 4 days later than current date and then store in database in ASP.Net<p>if i select the today date</p> <p>then i want store 4days later date in the database</p>http://www.aspforums.net/Threads/174484/Store-date-which-4-days-later-than-current-date-and-then-store-in-database-in-ASPNet/http://www.aspforums.net/Threads/174484/Store-date-which-4-days-later-than-current-date-and-then-store-in-database-in-ASPNet/Tue, 19 Jun 2012 05:34:54 GMTstack overflow<p>hii.. m getting this error..</p> <p>An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll</p> <pre class="brush: vb">Sub randgen() Randomize() rndum = &#34;&#34; Dim i As Integer = 0 For i = 1 To 8 x = Int(Rnd() * 10) rndum = rndum &amp; x Next nameAbbrevation() If nameFlag = 1 Then If ddlLoanScheme.SelectedValue = &#34;Marraige Loan&#34; Then ackid = &#34;MarLn_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Medical Facility&#34; Then ackid = &#34;MediFac_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Business Loan&#34; Then ackid = &#34;BusiLn_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Education Loan&#34; Then ackid = &#34;EduLn_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Home Loan&#34; Then ackid = &#34;HomeLn_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Auto Loan&#34; Then ackid = &#34;AutoLn_&#34; &amp; newword &amp; rndum ElseIf ddlLoanScheme.SelectedValue = &#34;Personal Loan&#34; Then ackid = &#34;PerLn_&#34; &amp; newword &amp; rndum End If Dim cnt1 As Integer = 0 con.Open() cmd = New SqlCommand(&#34;Proc_AddAppDetails&#34;, con) cmd.CommandType = Data.CommandType.StoredProcedure cmd.Parameters.Add(New SqlParameter(&#34;@Mode&#34;, Data.SqlDbType.VarChar, 50)) cmd.Parameters.AddWithValue(&#34;@strAppNo&#34;, Replace(Replace(ackid, &#34;&#39;&#34;, &#34;&#39;&#39;&#34;), &#34;&lt;&#34;, &#34;&#34;)) cmd.Parameters(&#34;@Mode&#34;).Value = &#34;chkDupAckwid&#34; cnt1 = cmd.ExecuteScalar() con.Close() If cnt1 = 0 Then ackid = ackid ElseIf cnt1 &gt; 0 Then ackid = &#34;&#34; End If End If If ackid = &#34;&#34; Then randgen() End If End Sub</pre> <p>&nbsp;</p> <p>&nbsp;</p> <p>m getting error at con.Open()</p> <p>pls help</p>http://www.aspforums.net/Threads/103495/stack-overflow/http://www.aspforums.net/Threads/103495/stack-overflow/Mon, 19 Dec 2011 01:43:04 GMTSignificance of Layers of Three Tier Architecture<p>Can any one explain about 3 tier architecture and n tier architecture.</p> <p>I dont need explanation about the layer but i need what is the flow in 3 tier and n tier architectuere and what each layer contains and what is the responsibilities of each layer.</p> <p>&nbsp;</p> <p>&nbsp;</p>http://www.aspforums.net/Threads/951960/Significance-of-Layers-of-Three-Tier-Architecture/http://www.aspforums.net/Threads/951960/Significance-of-Layers-of-Three-Tier-Architecture/Thu, 26 Jul 2012 07:08:23 GMTSignificance of 5 tier architecture and n tier architecture<p>Hi</p> <p>Can any one explain about 5 tier architecture flow and n tier architecture flow. I need the significance of each layer in both the architecture.</p> <p>&nbsp;Thanks.</p> <p>&nbsp;</p>http://www.aspforums.net/Threads/211873/Significance-of-5-tier-architecture-and-n-tier-architecture/http://www.aspforums.net/Threads/211873/Significance-of-5-tier-architecture-and-n-tier-architecture/Fri, 27 Jul 2012 06:30:25 GMTShow image without saving<p>Hi,</p> <p>In URL belowyou explain how to show an image without saving it.</p> <p>http://www.aspsnippets.com/Articles/Display-Byte-Array-as-Image-without-using-Generic-Handler-in-ASPNet.aspx</p> <p>I've used this but im experiencing troubles IE 6 &amp; 7 dont show the pic. And IE 8 seems to have a limit of somekind. It there a way to get round this problem ?</p> <p>I have an person screen and a different upload popup-like-screen</p> <p>I want to let the user upload it in this upload-screen and oly save it as the user say's save in the person screen so i don't want to save 1.001 pictures on the server if they don't click save in the person screen.</p> <p>&nbsp;</p> <p>thanks alot</p> <p>Marvin</p>http://www.aspforums.net/Threads/856229/Show-image-without-saving/http://www.aspforums.net/Threads/856229/Show-image-without-saving/Fri, 06 Jul 2012 01:52:58 GMTSet values from database when embedding Flash (SWF) file using EMBED in ASP.Net<p>I have this html code for <strong>embedding a CCTV camera</strong> in my aspx page:</p> <pre class="brush: xml">&lt;object id=&#34;VACtrl2&#34; width=&#34;800&#34; height=&#34;600&#34; classid=&#34;CLSID:70EDCF63-CA7E-4812-8528-DA1EA2FD53B6&#34; codebase=&#34;\VitaminCtrl_4.0.0.8.cab#version=3,0,0,12&#34;&gt; &lt;param name=&#34;ClickEventHandler&#34; value=&#34;1&#34; runat=&#34;server&#34;/&gt; &lt;param id=&#34;Param1&#34; name=&#34;UserName&#34; value=&#34;root&#34; runat=&#34;server&#34;/&gt; &lt;param id=&#34;Param2&#34; name=&#34;Password&#34; value=&#34;&#34; runat=&#34;server&#34;/&gt; &lt;param id=&#34;Param3&#34; name=&#34;RemoteIPAddr&#34; value=&#34;&#34; runat=&#34;server&#34;/&gt; &lt;param id=&#34;Param4&#34; name=&#34;HttpPort&#34; value=&#34;80&#34; runat=&#34;server&#34;/&gt; &lt;param id=&#34;Param5&#34; name=&#34;DisplayErrorMsg&#34; value=&#34;false&#34; runat=&#34;server&#34;/&gt; &lt;/object&gt;</pre> <p>I want to set the 3rd parameters value i.e., <strong>Param3</strong> from my C# code-behind using database table (i.e., the path to the file to be view).</p> <p>This 'Param3' name= 'RemoteIPAddress' field is there in database table (as below)</p> <table border="1" cellspacing="0" cellpadding="0"> <tbody> <tr> <td valign="top" width="73"> <p><strong>Id</strong></p> </td> <td valign="top" width="132"> <p><strong>IP Address</strong></p> </td> </tr> <tr> <td valign="top" width="73"> <p>1</p> </td> <td valign="top" width="132"> <p>10.9.84.222</p> </td> </tr> <tr> <td valign="top" width="73"> <p>2</p> </td> <td valign="top" width="132"> <p>100.153.1.1</p> </td> </tr> <tr> <td valign="top" width="73"> <p>3</p> </td> <td valign="top" width="132"> <p>169.254.0.99</p> </td> </tr> <tr> <td valign="top" width="73"> <p>4</p> </td> <td valign="top" width="132"> <p>100.0.1.4</p> </td> </tr> <tr> <td valign="top" width="73"> <p>5</p> </td> <td valign="top" width="132"> <p>169.254.0.90</p> </td> </tr> </tbody> </table> <p>How to achieve it.</p> <p>Please reply.</p> <p><br /><br /></p>http://www.aspforums.net/Threads/146001/Set-values-from-database-when-embedding-Flash-SWF-file-using-EMBED-in-ASPNet/http://www.aspforums.net/Threads/146001/Set-values-from-database-when-embedding-Flash-SWF-file-using-EMBED-in-ASPNet/Tue, 28 Jan 2014 01:59:37 GMT