SqlParameterCollection.AddWithValue(String, Object) SqlParameterCollection.AddWithValue(String, Object) SqlParameterCollection.AddWithValue(String, Object) SqlParameterCollection.AddWithValue(String, Object) Method

Definición

Agrega un valor al final de la colección SqlParameterCollection.Adds a value to the end of the SqlParameterCollection.

public:
 System::Data::SqlClient::SqlParameter ^ AddWithValue(System::String ^ parameterName, System::Object ^ value);
public System.Data.SqlClient.SqlParameter AddWithValue (string parameterName, object value);
member this.AddWithValue : string * obj -> System.Data.SqlClient.SqlParameter
Public Function AddWithValue (parameterName As String, value As Object) As SqlParameter

Parámetros

parameterName
String String String String

Nombre del parámetro.The name of the parameter.

value
Object Object Object Object

Valor que se va a agregar.The value to be added. Use Value en lugar de null para indicar un valor null.Use Value instead of null, to indicate a null value.

Devoluciones

Ejemplos

En el siguiente ejemplo se muestra cómo se utiliza el método AddWithValue.The following example demonstrates how to use the AddWithValue method.

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

Comentarios

AddWithValue reemplaza el SqlParameterCollection.Add método que toma un String y un Object.AddWithValue replaces the SqlParameterCollection.Add method that takes a String and an Object. La sobrecarga de Add que toma una cadena y un objeto ha quedado en desuso debido a la posible ambigüedad con el SqlParameterCollection.Add sobrecarga que toma un String y un SqlDbType que pasar un entero con la cadena podría ser el valor de enumeración interpreta como el valor del parámetro o el correspondiente SqlDbType valor.The overload of Add that takes a string and an object was deprecated because of possible ambiguity with the SqlParameterCollection.Add overload that takes a String and a SqlDbType enumeration value where passing an integer with the string could be interpreted as being either the parameter value or the corresponding SqlDbType value. Use AddWithValue siempre que desee agregar un parámetro especificando su nombre y valor.Use AddWithValue whenever you want to add a parameter by specifying its name and value.

Para SqlDbType Xml valores de enumeración, se puede utilizar una cadena, un valor XML, un XmlReader derivados de la instancia de tipo, o un SqlXml objeto.For SqlDbTypeXml enumeration values, you can use a string, an XML value, an XmlReader derived type instance, or a SqlXml object.

Se aplica a

Consulte también: