Im using Nested DataList in My Application. But i m not able to find control Inside Child DataList. (I want to Find Label Control In ItemDataBound Of ChildDataList)
Protected Sub DataList1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles DataList1.ItemDataBound lblshippingoutside.Visible = Dim lblshippingoutside As Label = CType(e.Item.FindControl("lblshippingoutside"), Label)False End Sub
Throws an exception .
Object reference not set to an instance of an object.
how i can find a DataList which is inside the DataList control? Its giving the Error Object not set to an Instance. i am finding the control this way :
i've a fileupload control <asp:fileupload> called (UpImage) inside the <EditItemTemplate> called (dtlAlbums) of a <asp:DetailsView> which is inside a <asp:GridView> called (grdAlbums), when i use the below code to find the control (UpImage) i get an error at the RED line that, (Object not set to a reference of an object)
I want to raise an checkbox check-changed event but its not firing :( . It Dosent raise even an command event.
My Requirement :
My Requirement is that i have a Datalist with header checkbox in headertemplate and a child checkbox in itemtemplate and a gridview control. Checking and unchecking will update the gridview control.
i am using the multiview control inside a page and i am trying to find a control using the javascript function document.getElementById. My Problem is that the function returns null cause it cannot find the control. When i open the code of the page from the browser the active view is not rendered so I think thats the reason why I am getting a null value from the function.
On the HTML code is rendered only the first view or the view that is activated on page load.
Is there any way to find a control inside the view using javascript? or I am doing something wrong?
I am trying to place a datalist inside datalist. I managed to place a datalist inside gridview but not datalist inside datalist.
Below is the code I am using to bind the datalist into the master gridview, I am trying to change this code in such way it will be right for datalist inside datalist but so far I did not succeed.
AM having a datalist with fields repeating based on some conditions say some textbox to enter Name ,DOB,Occupation,cell no,etc..and we have a button "Accompanying Person" .When this clicked i have to show same controls and enter details of accompanying persons like name,cell no etc...
SO same controls i have to show multiple times...but based on member /accompanying person i am hiding id field..but required field validator showing when the id is hidden..since this id is inside datalist and id textbox will be different how to hide this required field validator
I'm trying to hide a row in my repeater footer like so:
[Code]....
When it tries to hide the row i'm getting 'System.NullReferenceException: Object reference not set to an instance of an object.' Does anybody know how I can get araound this?
I have a label of time taken in datalist and i want to calculate the total time af all user in footer of datalist i have do this but i got the following error
Unable to cast object of type 'System.TimeSpan' to type 'System.IConvertible'. 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. Exception Details: System .Invalid CastException: Unable to cast object of type 'System.TimeSpan' to type 'System.IConvertible'.Source Error:
Line 25: if(e.Item.DataItem!= null) Line 26: { Line 27: time_taken_total += Convert.ToDecimal(DataBinder.Eval(e.Item.DataItem, "Timer")); Line 28: } Line 29: