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click a button to pop up new window to pass a value; is working on second click onwards

Posted By:      Posted Date: October 02, 2010    Points: 0   Category :ASP.Net

Hi all,


i am facing a problem to make a button onclick to pop up a new window with pass a value. it only working on second click on onwards.

i check the checkbox from a table then pass the ID for each data to another page.

below is my coding: hope anyone can help me. this is i add in button click; the PIID is a value i want to pass


 Protected Sub btn_download_in_excel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btn_download_in_excel.Click


        Dim keyID As String = ""
        Dim CheckedItems As SortedList = ViewState("CheckedItems")
        Dim ChkBxIndex As String = ""
        Dim strPsId As String = ""
        Dim PIID As String = ""
        Dim rows() As DataRow

        Dim CheckedItemsKeys As ICollection = CheckedItems.Keys
        Dim keys As IEnumerator = CheckedItemsKeys.GetEnumerator

        While keys.MoveNext
            If Not IsNothing(CheckedItems) Then
                ChkBxIndex = keys.Current
                keyID = ChkBxIndex

                rows = pLookupDataSet.Tables("CCL_TB_PART").Select("PIID = " & Cmn.QStr(keyID))

                If String.IsNullOrEmpty(PIID) Then
                    PIID = keyID

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