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Hi Every body

I am trying to pass a value form a GridView to a TextBox or a session.
Session["SEmpID"] = GridView1.SelectedRow.FindControl("SubjectID").ToString();
TXTTest.Text = GridView1.SelectedRow.FindControl("SubjectID").ToString();
But I always recive the error:
Object reference not set to an instance of an object.

I hope any one can solve it to me.

Thank you
Posted 18-Jan-13 5:12am
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Solution 1

GridView1.SelectedRow.FindControl("SubjectID") is null.
When you try to cast null to ToString(), you will get an error.

Try to find out why GridView1.SelectedRow.FindControl("SubjectID") is not returning anything.
Espen Harlinn 18-Jan-13 11:48am
Good point :-D
Abhinav S 18-Jan-13 12:03pm
Thank you.
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Solution 2


1) Is your given code in GridView1_SelectedIndexChanged() event.

2) Where you set GridView DataSource
if it is in page_load() event then it should be in

if (!IsPostBack) { GridView1.DataSource = "xyzDataset" }

Please mark it as ans & rate if you find it helps you.
Thank You
Asp.Net/C#.Net Help[^]
Hemant Singh
Nasser Abu Farah 18-Jan-13 10:50am
I added a button form the edit tiplatte in the grid view. and place the code in the button.

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