HI，

每个网格都有一个RowCommand事件.在RowCommand事件中找到控件.

Every grid have a RowCommand event. In RowCommand event you find the controls.

尝试类似的方法:

Try something like:

//Something similar to this
protected void Gridview_RowDataBound(object sender, DataGridItemEventArgs e)
{
     Textbox tbx = (TextBox)e.Row.FindControl("IWantedToGetThisTextbox");
     if (tbx != null)
     {
         // you got tbx.Text  value here. Do any calculation desired.
        
     }
}