ช่วยด้วยครับผม ทำไมพอ update แล้วข้อมูลเป็น แบบนี้อะครับ>>> System.Web.UI.WebControls.TextBox <<<<

IdCount = GridViewExe.DataKeys.Item(e.RowIndex).Value.ToString()
        Select Case result

            Case MsgBoxResult.Yes
                Dim txtQuestion As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditQuestion"), TextBox)
                Dim txtSentence As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditSentence"), TextBox)
                Dim txtChoise1 As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditChoise1"), TextBox)
                Dim txtChoise2 As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditChoise2"), TextBox)
                Dim txtAnswer As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditAnswer"), TextBox)
                Dim txtChoise3 As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditChoise3"), TextBox)
                Dim txtChoise4 As TextBox = CType(GridViewExe.Rows(e.RowIndex).FindControl("txtEditChoise4"), TextBox)


                conn.Open()


                Dim sqlUpdate As String = "update Exercises set Question='" + txtQuestion.Text + "' ,Sentence='" + txtSentence.Text + "' ,AnsChoise1='" + txtChoise1.Text + "' ,AnsChoise2='" + txtChoise2.Text + "' ,AnsChoise3='" + txtChoise3.Text + "' ,AnsChoise4='" + txtChoise4.Text + "' ,Answer='" + txtAnswer.Text + "' where Id_Question ='" + IdCount + "'"
                Dim sqlComUpdateExe As New SqlCommand(sqlUpdate, conn)
                sqlComUpdateExe.ExecuteNonQuery()

                conn.Close()