5 lines of filling a textbox itemtemplate in gridview

[Corpes]

I want to insert a dynamic string to a textbox that placed in a gridview as itemtemplate.

On the code in which im adding information to the gridview,

i want to create a line that'll insert to the textbox a dinamic information,

but even "9" doent work.

see it:

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DataRow dataRow = Faults.NewRow();

dataRow["Address"] = customerDT.Rows[0]["Address"];

dataRow["Phone"] = customerDT.Rows[0]["Phone"];

TextBox dateStringBox=(TextBox)dataRow.FindControl("date");

dateStringBox.Text="9";<---------------------Here is the problam!!!

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