I have a Radgrid with 2 Textboxes and 2 DatePickers. The idea is that I have a grid with a Property name, value, valid from and until. I'm filling the first Textbox myself, the user has to fill in the value, from and until. Filling in the propertynames: (In the pageload)

foreach (String s in testProperties) {
    DataRow dr = dt.NewRow();
    dr[0] = s;
    dr[1] = "";
    dr[2] = "";
    dr[3] = "";
    dt.Rows.Add(dr);
}

When the user hit "Save" I have to read out all the data he filled in. (In the btnSave click)

foreach (GridDataItem dataItem in RadGrid1.Items) {
   String[] str = new String[3];
   str[0] = ((TextBox)dataItem["col2"].FindControl("TextBox2")).Text;
   str[1] = ((RadDatePicker)dataItem["col3"].FindControl("RadDatePicker1")).SelectedDate.ToString();
   str[2] = ((RadDatePicker)dataItem["col4"].FindControl("RadDatePicker2")).SelectedDate.ToString();
   properties.Add(((TextBox)dataItem["col1"].FindControl("TextBox1")).Text, str);
}

Now this is where I have the problem. When i read out the data all my 'str' have the value "" instead the data that the user fills in.

Question is, how comes my values in the texboxes remain ""? Or is their a better way to read out the data?