Forms Data Controls :: Find Control In DetailsView Which Is Inside GridView?

Jan 25, 2011

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)

// code begins here
bool CheckFileType(string fileName)
{
string ext = Path.GetExtension(fileName);
switch (ext.ToLower())

[Code]....

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[Code]....

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[Code]....

I also tried

[Code]....

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[Code]....

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[Code]....

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[Code]....

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