DGV CHECKBOX Selected Item Want to Add . if have database Need UPDATE

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Hi all, I am using a DataGridView First column Checkbox, Regno, Name Like . When Checkbox is True means i Want To Add New Record. if have means i need to UPDATE

Here I use Code this code is working New Recored it not going to UPDATE..

Please Tell your Valuable Advice .

VB

Dim strda1 As SqlDataReader
        For Each row As DataGridViewRow In DGV1_SA.Rows
            Dim cell As DataGridViewCheckBoxCell = row.Cells(0)

            For ix As Integer = 0 To DGV1_SA.SelectedRows.Count - 1
                Dim strSQL12 As String = "select * from Attendance WHERE Regno='" & DGV1_SA.Rows(ix).Cells(1).Value & "' and On_Date='" & CDate(DTP1_SA.Value) & "'"
                Me.DaAp12 = New SqlDataAdapter(strSQL12, con)
                Dim Dset12 As New DataSet
                DaAp12.Fill(Dset12)

                If cell.Value = True Then
                    ' ADD NEW RECORED 
                    If strSQL12 <> "" Then
                        con.Open()
                        Dim VRegNo As String = row.Cells("Regno").Value
                        Dim VS_Name As String = row.Cells("sname").Value
                        cmd.CommandText = "INSERT INTO Attendance (Regno,Stud_Name,On_Date,I,II,III,IV,V,VI,VII,VIII,IX,X) VALUES ('" & VRegNo & "','" & VS_Name & "'," & _
                            "'" & CDate(DTP1_SA.Value) & "','" & CB1.Checked & "','" & CB2.Checked & "','" & CB3.Checked & "','" & CB4.Checked & "','" & CB5.Checked & "', " & _
                            "'" & CB6.Checked & "','" & CB7.Checked & "','" & CB8.Checked & "','" & CB9.Checked & "','" & CB10.Checked & "')"

                        cmd.ExecuteNonQuery()
                        con.Close()

                    Else ' UPDATE 
                        con.Open()
                        cmd.CommandText = ("UPDATE Attendance SET I='" & CB1.Checked & "',II='" & CB2.Checked & "',III='" & CB3.Checked & "', IV='" & CB4.Checked & "', V='" & CB5.Checked & "',  " & _
                                          "  VI='" & CB6.Checked & "' , VII='" & CB7.Checked & "' , VIII='" & CB8.Checked & "' , IX='" & CB9.Checked & "' , X='" & CB10.Checked & "' " & _
                                           " WHERE Regno='" & DGV1_SA.Rows(ix).Cells(1).Value & "' and On_Date='" & CDate(DTP1_SA.Value) & "'")

                        strda1 = cmd.ExecuteReader()
                        con.Close()
                    End If
                End If
            Next ix
        Next row
        MessageBox.Show("UpDate")

[Edit]Code block added[/Edit]

Posted 8-Mar-13 0:21am

Navas Khanj

Updated 9-Mar-13 0:40am

Thomas Daniels

v4

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[no name] 8-Mar-13 12:05pm

Move your "update" code to the If cell.Value = True code block.

Navas Khanj 8-Mar-13 12:17pm

i move update but not work

2 solutions

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Kschuler · Accepted Answer · 2013-03-08T06:37:00

Your code is kind of tough to follow, but I think your problem is on your check as to whether it is an add or an update.

If strSQL12 <> "" And Dset12.Tables(0).Rows.Count = 0 Then

First of all, strSQL12 is never going to be empty, so why are you checking it? You set it a few lines above and never seem to clear it out.

Second, your Dset12 is set before your loop through the rows. You've put data into this table that ONLY matches the first SELECTED row in the grid. It may or may not be a row that has a checkbox checked. It isn't the row that you are currently looking at in your loop.

You need to check, within the loop, if that record exists in the table already or not.

Navas Khanj · Accepted Answer · 2013-03-09T03:42:00

VB

For i As Integer = 0 To DataGridView1.Rows.Count - 1
            '==========================================1=====================

            Dim strSQL12 As String = "select * from AttendanceD WHERE Regno='" & DataGridView1.Rows(i).Cells(1).Value & "' and On_Date='" & CDate(DTP1.Value) & "'"
            Me.DaAp12 = New SqlDataAdapter(strSQL12, con)
            Dim Dset12 As New DataTable
            DaAp12.Fill(Dset12)
            DataGridView2.DataSource = Dset12
            Dset12.AcceptChanges()
            '=================================================================
            Dim ch1 As New DataGridViewCheckBoxCell()
            ch1 = CType(DataGridView1.Rows(DataGridView1.Rows(i).Index).Cells(0), DataGridViewCheckBoxCell)

            Select Case ch1.Value
                Case "True"
                    If strSQL12 <> "" AndAlso Dset12.Rows.Count - 1 Then '1
                        con.Open()
                        Dim VRegNo As String = DataGridView1.Rows(i).Cells("Regno").Value
                        Dim VS_Name As String = DataGridView1.Rows(i).Cells("Sname").Value
                        cmd.CommandText = "INSERT INTO AttendanceD (Regno,SName,On_Date,I,II,III) VALUES ('" & VRegNo & "','" & VS_Name & "'," & _
                            "'" & CDate(DTP1.Value) & "','" & CB1.Checked & "','" & CB2.Checked & "','" & CB3.Checked & "')"
                        cmd.ExecuteNonQuery()
                        con.Close()
                    Else
                        con.Open()
                        cmd.CommandText = ("UPDATE AttendanceD SET I='" & CB1.Checked & "',II='" & CB2.Checked & "',III='" & CB3.Checked & "' " & _
                                           " WHERE Regno='" & DataGridView1.Rows(i).Cells(1).Value & "' and On_Date='" & CDate(DTP1.Value) & "'")
                        strda1 = cmd.ExecuteReader()
                        con.Close()
                    End If '1
                    ' MessageBox.Show("Add")
                Case "False"
                    '  ch1.Value = True
                    MessageBox.Show("U?pdate")
            End Select

        Next i
        MessageBox.Show("Add")

DGV CHECKBOX Selected Item Want to Add . if have database Need UPDATE

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