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

Definition

値を SqlParameterCollection の末尾に追加します。 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

パラメーター

parameterName
String String String String

パラメーターの名前。 The name of the parameter.

value
Object Object Object Object

追加する値。 The value to be added. null 値を示すために、null の代わりに、Value を使用します。 Use Value instead of null, to indicate a null value.

Returns

Examples

AddWithValue メソッドの使用方法を次の例に示します。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

Remarks

AddWithValue 置換、SqlParameterCollection.Addを受け取るメソッドをStringObjectします。AddWithValue replaces the SqlParameterCollection.Add method that takes a String and an Object. オーバー ロードAdd文字列を受け取るし、オブジェクトが使用可能なあいまいさのため非推奨とされた、SqlParameterCollection.Addを受け取るオーバー ロードをStringSqlDbType列挙値の位置を表す整数、文字列を渡す可能性がありますパラメーターの値または対応するのいずれかとして解釈SqlDbType値。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. 使用AddWithValueの名前と値を指定することで、パラメーターを追加するたびにします。Use AddWithValue whenever you want to add a parameter by specifying its name and value.

SqlDbType Xml列挙値、文字列、XML 値を使用することができます、XmlReader派生型のインスタンスまたはSqlXmlオブジェクト。For SqlDbTypeXml enumeration values, you can use a string, an XML value, an XmlReader derived type instance, or a SqlXml object.

Applies to

See Also