Cannot have multiple items selected in a DropDownList. RSS

• • Reply
  

  maksudcs1

  Member

  18 Points

  26 Posts

  Cannot have multiple items selected in a DropDownList.

  Feb 28, 2012 10:01 AM|LINK

  Hello

  Expertise .. Plse help me ...

   during GridView SelectedIndex_Changed event .. i select Drop down item. then Erorr Occured below...

                      Cannot have multiple items selected in a DropDownList.

  Here is my code ...

   protected void dgdDeedDetail_SelectedIndexChanged(object sender, EventArgs e)
      {
          ddlDeedPaper.ClearSelection();
          ddlDeedPaper.Text = dgdDeedDetail.SelectedItem.Cells[12].Text;

  }

• • Reply
  

  usman400

  Contributor

  3503 Points

  721 Posts

  Re: Cannot have multiple items selected in a DropDownList.

  Feb 28, 2012 10:15 AM|LINK

  Drop down list is not designed to allow multiple selection
  try:

  ddlDeedPaper.SelectedText = dgdDeedDetail.SelectedItem.Cells[12].Text;

  Usman Waheed
• • Reply
  

  salman beher...

  All-Star

  30721 Points

  5871 Posts

  Re: Cannot have multiple items selected in a DropDownList.

  Feb 28, 2012 10:15 AM|LINK

  Hi,

  below line is solved your prob..

  DropDownList.Items.Clear()

  for details....

  http://geekswithblogs.net/shahed/archive/2008/08/23/124652.aspx

  Thanks...

  "…Mark As Answer" if my reply helpful to you…”
  Sincerely,
  Salman
  
  • Edited by Frank Jiang - MSFT on Mar 08, 2012 09:39 AM
  • Edited by Frank Jiang - MSFT on Mar 08, 2012 09:39 AM
  • Marked as answer by Frank Jiang - MSFT on Mar 08, 2012 09:40 AM
• • Reply
  

  maksudcs1

  Member

  18 Points

  26 Posts

  Re: Cannot have multiple items selected in a DropDownList.

  Feb 28, 2012 10:42 AM|LINK

  Thanks for Reply...

  Its getting error ...

  ------------------------------------

  On completion of page load, the page reads: "System.Web.HttpException: Cannot have multiple items selected in a DropDownList."...

  Trace file....

  HttpException (0x80004005): Cannot have multiple items selected in a DropDownList.]
     System.Web.UI.WebControls.DropDownList.VerifyMultiSelect() +107
     System.Web.UI.WebControls.ListControl.RenderContents(HtmlTextWriter writer) +1774854
     System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +29
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
     ASP.consultants_profile_main_aspx.__RenderContent1(HtmlTextWriter __w, Control parameterContainer) in C:\Inetpub\wwwroot\Quincy\Consultants\Profile_Main.aspx:28
     System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +2065851
     System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
     System.Web.UI.Control.Render(HtmlTextWriter writer) +7
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
     ASP.consultants_consultant_master.__RendertdContent(HtmlTextWriter __w, Control parameterContainer) in C:\Inetpub\wwwroot\Quincy\Consultants\Consultant.master:61
     System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +2065851
     System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
     System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +29
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
     System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +130
     System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
     System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +59
     System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +68
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +37
     System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +130
     System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
     System.Web.UI.Control.Render(HtmlTextWriter writer) +7
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
     System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +130
     System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +24
     System.Web.UI.Page.Render(HtmlTextWriter writer) +26
     System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
     System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
     System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1896

• • Reply
  

  salman beher...

  All-Star

  30721 Points

  5871 Posts

  Re: Cannot have multiple items selected in a DropDownList.

  Feb 28, 2012 11:48 AM|LINK

  Hi,

  refer....

  http://stackoverflow.com/questions/1603506/system-web-httpexception-cannot-have-multiple-items-selected-in-a-dropdownlist

  http://forums.asp.net/t/987269.aspx/1

  Thanks...

  "…Mark As Answer" if my reply helpful to you…”
  Sincerely,
  Salman
  
  • Marked as answer by Frank Jiang - MSFT on Mar 08, 2012 09:39 AM