สอบถามการเรียกใช้ Button ใน TemplateField ของ GridView ต้องใส่คำสั่งประมาณไหนครับ asp.net

Imports Newtonsoft.Json

Public Class usrCtrl_IC_A1_01_
    Inherits System.Web.UI.UserControl
    Implements System.Web.UI.ICallbackEventHandler

    Public Property curActions() As String
        Get
            Return ViewState("curActions")
        End Get
        Set(value As String)
            ViewState("curActions") = value
        End Set
    End Property

    Private Sub Page_Init(sender As Object, e As System.EventArgs) Handles Me.Init
       'ยังไม่ได้กำหนดสิทธิ์การเข้าใช้งาน
        Toolbar931.FindControl("Post").Visible = True
        Toolbar931.FindControl("AdvSearch").Visible = True
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If curActions Is Nothing Then
            curActions = Page.Items("IC_A1")
            txtPrefix.Text = curActions
            lblWLMD.Text = String.Format("บันทึกแก้ไขรายการ {0} สินค้าคงคลัง [IC_A1_01-RV-001]", (New Dictionary(Of String, String) From
                                        {{"RC", "รับ"}, {"IS", "จ่าย"}, {"AJ", "ปรับปรุง"}})(curActions))

            Dim upn As UpdatePanel = Me.Parent.FindControl("upnIC_MainMen")
            Dim txtSearch As String = Toolbar931.FindControl("txtSearch").ClientID
            Dim txtSearchValue As String = DirectCast(Toolbar931.FindControl("txtSearch"), TextBox).Text

            If upn IsNot Nothing Then
                Dim obj2Name As String = DirectCast(Me.FindControl("txtTran_TypeDesc"), TextBox).ClientID
                Dim strJS As New StringBuilder() 
                Dim curModule As String = DirectCast(Me.Page.Master.FindControl("TCM_cpCurentModule"), Label).ClientID
                Dim curSubModule As String = DirectCast(Me.Page.Master.FindControl("lblcpCurentModule"), Label).ClientID

                strJS.Append(" function LookupTab2(tabType, tabCode, event, obj1, obj2Name) {")
                strJS.Append("    var p = window.event ? event.keyCode : event.which;")
                strJS.Append("    if (p == 9 || p == 38 || p == 40 || p == 37 || p == 39 || p == 36 || p == 35) { return true; }")
                strJS.Append("    var obj2;")
                strJS.Append("    if (obj2Name == 'lblPart_Desc') {")
                strJS.Append("        obj2 = $(obj1).closest('.PartCode').parent().find('.PartName')[0];")
                strJS.Append("    } else {")
                strJS.Append("        obj2 = document.getElementById(obj2Name);")
                'strJS.Append("         obj2 = $('#'+obj2Name);")
                strJS.Append("    }")
                strJS.Append("    var key = tabType + tabCode + obj1.value.toUpperCase();")
                strJS.Append("    WL_ERP.WL_WSLookupTab.GetBasicDataTab(key, PrdSucCallback, PrdFailCallback, obj2);")
                strJS.Append(" }")
                strJS.Append(" function PrdSucCallback(result, obj) {")
                strJS.Append("    obj.value = result ? result : '';") 'IE-OK, FireFox-OK, Chrome-OK
                strJS.Append(" }")
                strJS.Append(" function PrdFailCallback(result, obj) {")
                strJS.Append("    obj.value = '';")
                strJS.Append(" }")
                strJS.Append(" }")

                ScriptManager.RegisterClientScriptBlock(upn, upn.GetType(), New Guid().ToString(), strJS.ToString(), True)
            End If

            txtTran_Type.Attributes.Add("onkeyup", "LookupTab2('TRN_TAB','" & curActions & "', event, this, '" & txtTran_TypeDesc.ClientID & "');")
            txtWarehouse.Attributes.Add("onkeyup", "LookupTab2('WHS_TAB', '" & GetSignOnUserInfo().OrgCode & "', event, this, '" & lblWarehouse.ClientID & "');")
        End If

        If ViewState("curPage") Is Nothing Then
            Call WL_Common.GridManager.SetGridViewInformation(gvrptFormat, {"เลขที่เอกสาร", "วันที่เอกสาร", "คลังสินค้า", "รหัสรายการ", "คำอธิบาย"},
                                                                           {"Doc_NO", "Doc_Date", "From_WHS", "Tran_Code", "Tran_Desc"},
                                                                           {"100", "90", "200", "200", "200"},
                                                                           {"C", "C", "C", "C", "C"},
                                                                           {"L", "L", "L", "L", "L"},
                                                                           {"L", "L", "L", "L", "L"})

            Dim formatDate As String = "{0:dd-mm-yyyy}"
            Dim bf As BoundField

            bf = gvrptFormat.Columns(1)
            bf.DataFormatString = formatDate

            Dim lstH = WL_BLL.ICH.GetListINFO_A(curActions)

            ViewState("curPage") = lstH
            gvrptFormat.DataSource = lstH.ToList() 
            gvrptFormat.DataBind()
        End If

        'ข้อมูลหน่วยนับ
        If ViewState("curPage1") Is Nothing Then
            ViewState("curPage1") = WL_BLL.UM_Tab.GetList()
        End If

        AddHandler DirectCast(Me.Parent.Page, IC_MainMenu).btnOKCallBack_Click, AddressOf CallBack_Click
        AddHandler DirectCast(Me.Page.Master, WL_ERP_Center_03).mstCheckGridViewDoubleClick, AddressOf GridViewDoubleClick
        AddHandler DirectCast(Me.Page, IC_MainMenu).btnOKGetBasicData_Click, AddressOf BrowBasicData

        'วางคอนโทรลเอาไว้ที่เดียว IC_MainMenu
        AddHandler DirectCast(Me.Page, IC_MainMenu).btnOKCancel_Click, AddressOf oth1_oth2_back3_Click

    End Sub
End Class

void gv_RowCommand(Object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "MyCommand") //เป็นเชื่อปุ่มนะครับ
    {
    }
}