The Digital Tool Factory Blog

The Problem: The web application works just fine on the local machine, but when you upload it to the web server you get the error “The entry ‘ScriptModule’ has already been added.”

The Cause: It is a conflict between asp.net versions.

The Solution: Simply comment out the <add name=”ScriptModule” type=”System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35″/> line in the web.config file and you should be good to go.

This post originally appeared on the Stronico blog – with the absorption of Stronico into Digital Tool Factory this post has been moved to the Digital Tool Factory blog

The Problem: You have to have a fully validated date box. The dates must be valid dates and there must be data entered in the field.

The Cause: Not a problem really, I wind up rewriting it slightly differently each time. I thought I would put a definitive version here.

The Solution: Use this code
<asp:TextBox ID=”tbDate” runat=”server” CssClass=”body” />
<ajaxToolkit:MaskedEditExtender ID=”meeDate” runat=”server”
TargetControlID=”tbDate”
Mask=”99/99/9999″
MessageValidatorTip=”true”
OnFocusCssClass=”MaskedEditFocus”
OnInvalidCssClass=”MaskedEditError”
MaskType=”Date”
DisplayMoney=”Left”
AcceptNegative=”Left”
ErrorTooltipEnabled=”True” />
<ajaxToolkit:CalendarExtender ID=”ceDate” runat=”server” TargetControlID=”tbDate” PopupButtonID=”imgDate” />
<asp:RequiredFieldValidator ID=”rfvDate” runat=”server” ControlToValidate=”tbDate”
Display=”none” ErrorMessage=”<b>Required Field Missing</b><br />You must supply a date”
SetFocusOnError=”true” ValidationGroup=”MainB” />
<ajaxToolkit:ValidatorCalloutExtender ID=”vceDate” runat=”server” TargetControlID=”rfvDate” Width=”300″ />

<asp:CompareValidator ID=”compVDate” runat=”server” ValidationGroup=”MainB”
ControlToValidate=”tbDate” Display=”None” ErrorMessage=”<b>Required Field Missing</b><br />You must supply a valid date”
Operator=”DataTypeCheck” Type=”Date” />
<ajaxToolkit:ValidatorCalloutExtender ID=”vceCompDate” runat=”server” TargetControlID=”compVDate” Width=”300″ />
<asp:ImageButton runat=”Server” ID=”imgDate” ImageUrl=”img/icon_calendar.gif” AlternateText=”Click to show calendar” />

That’s it!

This post originally appeared on the Stronico blog – with the absorption of Stronico into Digital Tool Factory this post has been moved to the Digital Tool Factory blog

The Problem: You need to create a dynamic excel spreadsheet in C#/ASP.net. There are several ways to accomplish this, but this is one I use when I don’t need to specify the column names order to any great detail. I’ve included it in the How To Fix series simply because it took me more than 15 minutes to find the code, and rules are rules.

The Cause: No cause really, this is a method. The cause of hte problem was being a bit disorganized today.

The Solution: Just copy and paste the following code into your C# code behind and let her rip! Utility.dsGrab is just a function that returns a dataset.

DataTable dt = new DataTable();DataSet ds = Utility.dsGrab("SampleDataSet");dt = ds.Tables[0];GridView gv = new GridView();

if (dt.Rows.Count > 0){gv.DataSource = dt;gv.DataBind();System.IO.StringWriter oStringWriter =     new System.IO.StringWriter();System.Web.UI.HtmlTextWriter oHtmlTextWriter =     new HtmlTextWriter(oStringWriter);Response.ClearContent();Response.ContentType = "application/ms-excel";Response.AddHeader("Content-Disposition", "attachment;     filename=SampleExcel.xls");Response.Charset = "";Response.Buffer = true;EnableViewState = false;gv.RenderControl(oHtmlTextWriter);Response.Write(oStringWriter.ToString());Response.End();}

That’s it! It won’t open up in the browser window either.

This post originally appeared on the Stronico blog – with the absorption of Stronico into Digital Tool Factory this post has been moved to the Digital Tool Factory blog