Question

.Net DataGridView add a button to remove record?

Asked by: yo_daz_uk

All.

I have a few datagridviews (DGV) in a win forms app.

They are populated by a datatable set in code and not by a dataset using the designer.  What i want to be able to do is have a button on the DGV for each record and when they select it take the value of column one and column two and execute a sql DELETE Command.

I dont know how to add the button, or on the event of the button press capture the selected rows column 1 and 2.  Any ideas?

Thanks,

Daz

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Asked On
2008-12-10 at 08:32:09ID23973141
Tags

Microsoft

,

Vb.Net 2008 and Framework 3.5

,

2008

Topics

Microsoft Visual Basic.Net

,

.NET Framework 3.x versions

Participating Experts
2
Points
100
Comments
4

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Answers

 

by: sl8rzPosted on 2008-12-10 at 11:41:37ID: 23142115

How about having a delete button near the dgv and have it delete the highlighted row or rows?

 

by: melinaltPosted on 2008-12-10 at 11:53:55ID: 23142245

Try this out:


1.  Add this column to your datagrid:

<asp:TemplateColumn>
<HeaderTemplate>
Delete Access
</HeaderTemplate>
<HeaderStyle  HorizontalAlign="Center"  />
<ItemTemplate>
<asp:imagebutton  runat="server" ImageUrl="../images/delete.gif" AlternateText="Delete Access" CommandName="Delete" CausesValidation="True" ID="DeleteButton" />
  </ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateColumn>


------------------------------------------------

2.  On your datagrid properties add:  

OnDeleteCommand="DataGrid_Delete"

---------------------------------------------------

3.  On your source code add the following code snippet:

Where
dg = datagrid name
keyvalue = DataKeyField (from datagrid properties)

Dim  keyvalue  as string
Dim isEditing  as boolean=false
Dim strConn As String = "your connection string here"
Dim objConnect As SqlConnection = New SqlConnection(strConn)
Dim strCommand As New SqlCommand
 
    Sub DataGrid_Delete(ByVal Sender As Object, ByVal E As DataGridCommandEventArgs)
 
        If Not isEditing Then
            keyvalue = CStr(dg.DataKeys(E.Item.ItemIndex))
             strCommand = New SqlCommand("delete [tablename] where sysid='" & keyvalue & "'", objConnect)
            strCommand.CommandType = CommandType.Text
            strCommand.CommandTimeout = 0
            objConnect.Open()
            strCommand.ExecuteNonQuery()
            strCommand = Nothing
            objConnect.Close()
            dg.CurrentPageIndex = 0
            dg.EditItemIndex = -1
            bindGrid()
        End If
 
    End Sub
                                              
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by: yo_daz_ukPosted on 2008-12-11 at 08:37:06ID: 23149793

Hi melinalt:,

It is a win forms app not asp so it is slightly different.

I have managed to add a button per row.  By selecting the DataGridView selecting the columns and the button to show the add up.  From there i can add a column called RemoveRecord that puts a button in per row.

Now i dont know how to reference this button and get the selected buttons rows column details.

Im guessing as i can easily add a button column using the designer then i should be easily be able to reference this button and the selected rows data ?

 

 

by: yo_daz_ukPosted on 2008-12-12 at 05:11:16ID: 31524633

I found the solution on another experts exchange message, but melinalt gave me the idea.  You have to get the cell clicked event and see if the thing clicked is the name of your button column.

20120131-EE-VQP-002

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