SqlDataSource.ProviderName Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the name of the .NET Framework data provider that the SqlDataSource control uses to connect to an underlying data source.

public:
 virtual property System::String ^ ProviderName { System::String ^ get(); void set(System::String ^ value); };

[System.ComponentModel.TypeConverter("System.Web.UI.Design.WebControls.DataProviderNameConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public virtual string ProviderName { get; set; }

[System.ComponentModel.TypeConverter("System.Web.UI.Design.WebControls.DataProviderNameConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public virtual string ProviderName { get; set; }

[<System.ComponentModel.TypeConverter("System.Web.UI.Design.WebControls.DataProviderNameConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
member this.ProviderName : string with get, set

[<System.ComponentModel.TypeConverter("System.Web.UI.Design.WebControls.DataProviderNameConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
member this.ProviderName : string with get, set

Public Overridable Property ProviderName As String

Property Value

String

The name of the data provider that the SqlDataSource uses; otherwise, the ADO.NET provider for Microsoft SQL Server, if no provider is set. The default is the ADO.NET provider for Microsoft SQL Server.

Attributes: TypeConverterAttribute

Examples

This section contains two code examples. The first code demonstrates how to connect to a SQL Server database using the default .NET Framework Data Provider for SQL Server for the SqlDataSource control, the System.Data.SqlClient. The second code example demonstrates how to connect to an ODBC database using the .NET Framework Data Provider for ODBC, the System.Data.Odbc.

The following code example demonstrates how to connect to a SQL Server database using the default data provider for the SqlDataSource control, the System.Data.SqlClient. Whenever the ProviderName property is not explicitly set, the default provider is used. The ConnectionString property is provider-specific.

<%@ Page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataReader"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT LastName FROM Employees">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataTextField="LastName"
          DataSourceID="SqlDataSource1">
      </asp:ListBox>

    </form>
  </body>
</html>

<%@ Page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataReader"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          SelectCommand="SELECT LastName FROM Employees">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataTextField="LastName"
          DataSourceID="SqlDataSource1">
      </asp:ListBox>

    </form>
  </body>
</html>

The following code example, which is functionally the same as the preceding code example, demonstrates how to connect to an ODBC database using the .NET Framework Data Provider for ODBC, the System.Data.Odbc. The ConnectionString property is set to the name of an ODBC data source name (DSN) that is used to connect to the ODBC database.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <!-- This example uses a Northwind database that is hosted by an ODBC-compliant
         database. To run this sample, create an ODBC DSN to any database that hosts
         the Northwind database, including Microsoft SQL Server or Microsoft Access,
         change the name of the DSN in the ConnectionString, and view the page.
    -->
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          ProviderName="System.Data.Odbc"
          ConnectionString="dsn=myodbc3dsn;"
          SelectCommand="SELECT LastName FROM Employees;">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataSourceID="SqlDataSource1"
          DataTextField="LastName">
      </asp:ListBox>

    </form>
  </body>
</html>

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <!-- This example uses a Northwind database that is hosted by an ODBC-compliant
         database. To run this sample, create an ODBC DSN to any database that hosts
         the Northwind database, including Microsoft SQL Server or Microsoft Access,
         change the name of the DSN in the ConnectionString, and view the page.
    -->
    <form id="form1" runat="server">
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          ProviderName="System.Data.Odbc"
          ConnectionString="dsn=myodbc3-test;"
          SelectCommand="SELECT LastName FROM Employees;">
      </asp:SqlDataSource>

      <asp:ListBox
          id="ListBox1"
          runat="server"
          DataSourceID="SqlDataSource1"
          DataTextField="LastName">
      </asp:ListBox>

    </form>
  </body>
</html>

Remarks

The .NET Framework includes the following data providers:

The System.Data.SqlClient provider is the default .NET Framework Data Provider for SQL Server.
The System.Data.OleDb provider is the .NET Framework Data Provider for OLE DB.
The System.Data.Odbc provider is the .NET Framework Data Provider for ODBC.
The System.Data.OracleClient provider is the .NET Framework Data Provider for Oracle.

The ProviderName property is never set to the name of an unmanaged ADO.NET provider, such as MSDAORA. For more information, see Selecting Data Using the SqlDataSource Control.

If you change the ProviderName property, the DataSourceChanged event is raised, causing any controls that are bound to the SqlDataSource to rebind.

A list of available providers is specified in the DbProviderFactories subsection of the system.data section of the Machine.config file.

Applies to

Megosztás a következőn keresztül: