RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://learn.microsoft.com/en-us/dotnet/api/system.data.sqlclient.sqlcommand.parameters below:

SqlCommand.Parameters Property (System.Data.SqlClient) | Microsoft Learn

SqlCommand.Parameters Property Definition

public:
 property System::Data::SqlClient::SqlParameterCollection ^ Parameters { System::Data::SqlClient::SqlParameterCollection ^ get(); };

public System.Data.SqlClient.SqlParameterCollection Parameters { get; }

[System.Data.DataSysDescription("DbCommand_Parameters")]
public System.Data.SqlClient.SqlParameterCollection Parameters { get; }

member this.Parameters : System.Data.SqlClient.SqlParameterCollection

[<System.Data.DataSysDescription("DbCommand_Parameters")>]
member this.Parameters : System.Data.SqlClient.SqlParameterCollection

Public ReadOnly Property Parameters As SqlParameterCollection

Property Value

The parameters of the Transact-SQL statement or stored procedure. The default is an empty collection.

Attributes

Examples

The following example demonstrates how to create a SqlCommand and add parameters to the SqlParameterCollection.

private static void UpdateDemographics(Int32 customerID,
    string demoXml, string connectionString)
{
    // Update the demographics for a store, which is stored
    // in an xml column.
    string commandText = "UPDATE Sales.Store SET Demographics = @demographics "
        + "WHERE CustomerID = @ID;";

    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand command = new SqlCommand(commandText, connection);
        command.Parameters.Add("@ID", SqlDbType.Int);
        command.Parameters["@ID"].Value = customerID;

        // Use AddWithValue to assign Demographics.
        // SQL Server will implicitly convert strings into XML.
        command.Parameters.AddWithValue("@demographics", demoXml);

        try
        {
            connection.Open();
            Int32 rowsAffected = command.ExecuteNonQuery();
            Console.WriteLine("RowsAffected: {0}", rowsAffected);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }
}

Private Sub UpdateDemographics(ByVal customerID As Integer, _
    ByVal demoXml As String, _
    ByVal connectionString As String)

    ' Update the demographics for a store, which is stored 
    ' in an xml column.
    Dim commandText As String = _
     "UPDATE Sales.Store SET Demographics = @demographics " _
     & "WHERE CustomerID = @ID;"

    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(commandText, connection)

        ' Add CustomerID parameter for WHERE clause.
        command.Parameters.Add("@ID", SqlDbType.Int)
        command.Parameters("@ID").Value = customerID

        ' Use AddWithValue to assign Demographics.
        ' SQL Server will implicitly convert strings into XML.
        command.Parameters.AddWithValue("@demographics", demoXml)

        Try
            connection.Open()
            Dim rowsAffected As Integer = command.ExecuteNonQuery()
            Console.WriteLine("RowsAffected: {0}", rowsAffected)

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
    End Using
End Sub

Remarks

The Microsoft .NET Framework Data Provider for SQL Server does not support the question mark (?) placeholder for passing parameters to a SQL Statement or a stored procedure called by a command of CommandType.Text. In this case, named parameters must be used. For example:

SELECT * FROM Customers WHERE CustomerID = @CustomerID

Note

If the parameters in the collection do not match the requirements of the query to be executed, an error may result.

For more information, see Configuring Parameters and Parameter Data Types.