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Use ado + to delete data

Source: Internet
Author: User
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<% @ Import Namespace = "System. Data" %>
<% @ Import Namespace = "System. Data. SQL" %>

<Html>

<Script language = "VB" runat = "server">

Dim MyConnection As SQLConnection

Sub Page_Load (Src As Object, E As EventArgs)

MyConnection = New SQLConnection ("server = YOUR-SERVER; uid = joeuser; pwd = joeuser; database = pubs ")

If Not (IsPostBack)
BindGrid ()
End If
End Sub

Sub MyDataGrid_Delete (Sender As Object, E As DataGridCommandEventArgs)

Dim MyCommand As SQLCommand
Dim DeleteCmd As String = "DELETE from Authors where au_id = @ Id"

MyCommand = New SQLCommand (DeleteCmd, MyConnection)
MyCommand. Parameters. Add (New SQLParameter ("@ Id", SQLDataType. VarChar, 11 ))
MyCommand. Parameters ("@ Id"). Value = MyDataGrid. DataKeys (CInt (E. Item. ItemIndex ))

MyCommand. ActiveConnection. Open ()

Try
MyCommand. ExecuteNonQuery ()
Message. InnerHtml = "<B> Record Deleted </B> <br>" & DeleteCmd
Catch Exp As SQLException
Message. InnerHtml = "ERROR: cocould not delete record"
Message. Style ("color") = "red"
End Try

MyCommand. ActiveConnection. Close ()

BindGrid ()
End Sub

Sub BindGrid ()

Dim DS As DataSet
Dim MyCommand As SQLDataSetCommand
MyCommand = New SQLDataSetCommand ("select * from Authors", MyConnection)

DS = new DataSet ()
MyCommand. FillDataSet (DS, "Authors ")

MyDataGrid. DataSource = DS. Tables ("Authors"). DefaultView
MyDataGrid. DataBind ()
End Sub

</Script>

<Body style = "font: 10pt verdana">

<Form runat = "server">

<H3> <font face = "Verdana"> Deleting a Row of Data </font>

<Span id = "Message" MaintainState = "false" style = "font: arial 11pt;" runat = "server"/> <p>

<ASP: DataGrid id = "MyDataGrid" runat = "server"
Width = "800"
BackColor = "# ccccff"
BorderColor = "black"
ShowFooter = "false"
CellPadding = 3
CellSpacing = "0"
Font-Name = "Verdana"
Font-Size = "8pt"
HeaderStyle-BackColor = "# aaaadd"
DataKeyField = "au_id"
OnDeleteCommand = "MyDataGrid_Delete"
>

<Property name = "Columns">
<Asp: ButtonColumn Text = "Delete Author" CommandName = "Delete"/>
</Property>

</ASP: DataGrid>

</Form>

</Body>
</Html>


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