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SqlParameter.SqlParameter(String, SqlDbType, Int32, String) Constructor

Initializes a new instance of the SqlParameter class that uses the parameter name, the SqlDbType, the size, and the source column name.

Namespace: System.Data.SqlClient
Assembly: System.Data (in system.data.dll)

public SqlParameter (
	string parameterName,
	SqlDbType dbType,
	int size,
	string sourceColumn
)
public SqlParameter (
	String parameterName, 
	SqlDbType dbType, 
	int size, 
	String sourceColumn
)
public function SqlParameter (
	parameterName : String, 
	dbType : SqlDbType, 
	size : int, 
	sourceColumn : String
)
Not applicable.

Parameters

parameterName

The name of the parameter to map.

dbType

One of the SqlDbType values.

size

The length of the parameter.

sourceColumn

The name of the source column.

Exception typeCondition

ArgumentException

The value supplied in the dbType parameter is an invalid back-end data type.

The Size is inferred from the value of the dbType parameter if it is not explicitly set in the size parameter.

The following example creates a SqlParameter and sets some of its properties.

private static void AddSqlParameter(SqlCommand command)
{
    SqlParameter parameter = new SqlParameter("@Description", 
        SqlDbType.VarChar, 88, "Description");
    parameter.IsNullable = true;
    parameter.Direction = ParameterDirection.Output;

    command.Parameters.Add(parameter);
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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