VB.NET & System.Data.OleDb - Parameter Query (OleDbParameter) - How to learn System.Data.OleDb namespace is the .NET Framework Data Provider for OLE DB data source, Using the OleDbParameter for mapping to a DataSet column (Microsoft Access (*.mdb) Database)
ShotDev Focus:
- VB.NET & System.Data.OleDb - Parameter Query (OleDbParameter)
Example
ParameterQuery.aspx
<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%@ Page Language="VB" %>
<script runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
Sample1()
End Sub
Sub Sample1()
Dim objConn As System.Data.OleDb.OleDbConnection
Dim objCmd As System.Data.OleDb.OleDbCommand
Dim strConnString,strSQL As String
strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="& _
Server.MapPath("database/mydatabase.mdb")&";Jet OLEDB:Database Password=;"
objConn = New System.Data.OleDb.OleDbConnection(strConnString)
objConn.Open()
'*** FOR INSERT ***'
strSQL = "INSERT INTO customer (CustomerID,Name,Email,CountryCode,Budget,Used) " & _
"VALUES (@sCustomerID,@sName,@sEmail,@sCountryCode,@sBudget,@sUsed)"
objCmd = New System.Data.OleDb.OleDbCommand(strSQL,objConn)
'*** Sample 1 ***'
'With objCmd
' .Parameters.AddWithValue("@sCustomerID","C005")
' .Parameters.AddWithValue("@sName","Weerachai Nukitram")
' .Parameters.AddWithValue("@sEmail","[email protected]")
' .Parameters.AddWithValue("@sCountryCode","TH")
' .Parameters.AddWithValue("@sBudget","2000000")
' .Parameters.AddWithValue("@sUsed","1000000")
'End With
'*** Sample 2 ***'
With objCmd
.Parameters.Add(New OleDbParameter("@sCustomerID","C005"))
.Parameters.Add(New OleDbParameter("@sName","Weerachai Nukitram"))
.Parameters.Add(New OleDbParameter("@sEmail","[email protected]"))
.Parameters.Add(New OleDbParameter("@sCountryCode","TH"))
.Parameters.Add(New OleDbParameter("@sBudget","2000000"))
.Parameters.Add(New OleDbParameter("@sUsed","1000000"))
End With
objCmd.ExecuteNonQuery()
lblText.Text = "Record Insert Sucessful."
'*** FOR UPDATE ***'
'strSQL = "UPDATE customer SET Budget = @sBudget " & _
'" WHERE CustomerID = @sCustomerID "
'objCmd = New System.Data.OleDb.OleDbCommand(strSQL,objConn)
'With objCmd
' .Parameters.Add(New OleDbParameter("@sBudget","4000000"))
' .Parameters.Add(New OleDbParameter("@sCustomerID","C005"))
'End With
'objCmd.ExecuteNonQuery()
'*** FOR DELETE ***'
'strSQL = "DELETE FROM customer " & _
'" WHERE CustomerID = @sCustomerID "
'objCmd = New System.Data.OleDb.OleDbCommand(strSQL,objConn)
'With objCmd
' .Parameters.Add(New OleDbParameter("@sCustomerID","C005"))
'End With
'objCmd.ExecuteNonQuery()
objCmd = Nothing
objConn.Close()
objConn = Nothing
End Sub
</script>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<form id="form1" runat="server">
<asp:Label id="lblText" runat="Server"></asp:Label>
</form>
</body>
</html>
Screenshot
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