Adds a value to the end of the SqlParameterCollection.
Public Function AddWithValue ( _ parameterName As String, _ value As Object _ ) As SqlParameter
Dim instance As SqlParameterCollection Dim parameterName As String Dim value As Object Dim returnValue As SqlParameter returnValue = instance.AddWithValue(parameterName, _ value)
public SqlParameter AddWithValue( string parameterName, Object value )
public: SqlParameter^ AddWithValue( String^ parameterName, Object^ value )
public function AddWithValue( parameterName : String, value : Object ) : SqlParameter
AddWithValue replaces the SqlParameterCollection.Add method that takes a String and an Object. 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 whenever you want to add a parameter by specifying its name and value.
For SqlDbType Xml enumeration values, you can use a string, an XML value, an XmlReader derived type instance, or a SqlXml object.
The following example demonstrates how to use the AddWithValue method.
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
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); } } }
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