CSharp Writing Data From Connection With Try And Catch (C#) – ADO.Net Database

<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OleDb" %>
<script Language="c#" runat="server">
  void Page_Load()
  {
    string strConnection = "Provider=Microsoft.Jet.OleDb.4.0;";
//    strConnection += @"Data Source=C:\Northwind.mdb";
    strConnection += @"Data Source="+MapPath("EmployeeDatabase.mdb");    data_src.Text = strConnection;
    string strSQL = "SELECT FirstName, LastName FROM Employee;";
    DataSet objDataSet = new DataSet();
    OleDbConnection objConnection = new OleDbConnection(strConnection);
    OleDbDataAdapter objAdapter = new OleDbDataAdapter(strSQL, objConnection);
    try
    {
      objAdapter.Fill(objDataSet, "Employees");
      DataView objDataView = new DataView(objDataSet.Tables["Employees"]);
      dgNameList.DataSource = objDataView;
      dgNameList.DataBind();
    }
    catch (OleDbException objError)
    {
      if (objError.Message.Substring(0,21) == "Login failed for user")
      {
        divErrorReport.InnerHtml = "Problem with Log-in";
      }
      else if (objError.Message.Substring(0,19) == "Could not find file")
      {
        divErrorReport.InnerHtml =
                          "We could not find the MDB file that you asked for";
      }
      else
      {
        divErrorReport.InnerHtml =  "<br />message - " + objError.Message;
        divErrorReport.InnerHtml += "<br />source - " + objError.Source;
      }
    }
  }
</script>
<html>
  <body>
  <h4>Writing data from the connection
    <asp:label id="data_src" runat="server"/>
    to the DataGrid control with error checking.</h4>
  <div id="divErrorReport" runat="server"> </div>
  <asp:datagrid id="dgNameList" runat="server" /><br />
  </body>
</html>

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