How To Add Dynamic Controls To Content Page
Jun 16, 2015
I have referred link [URL] .....
I need to add the dynamic dropdown on content page from content page itself,i have tried the below code its throwing error object instance property cannot be null.
protected void Page_PreInit(object sender, EventArgs e) {
//Create a Dynamic Panel
Panel pnlDropDownList;
pnlDropDownList = new Panel();
pnlDropDownList.ID = "pnlDropDownList";
[Code] .....
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Can I ask what this error refers to, (I have had it twice now over the last couple of days and then it goes away):
System.Web.HttpException: Content controls are allowed only in content page that references a master page.
This is followed by Stack Trace:
[HttpException (0x80004005): Content controls are allowed only in content page that references a master page.]
System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +9744256
System.Web.UI.Page.get_Master() +55
System.Web.UI.Page.ApplyMasterPage() +14
System.Web.UI.Page.PerformPreInit() +51
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1104
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[Code]....
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[Code].........................
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(Example code below)
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[Code]....
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[Code]....
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[Code]....
Second way:
[Code]....
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using System;
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using System.IO;
using System.Web;
[Code]....
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[code]....
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[code].....
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