SqlParameter Constructor (String, SqlDbType, Int32, ParameterDirection, Boolean, Byte, Byte, String, DataRowVersion, Object)

SqlParameter Constructor (String, SqlDbType, Int32, ParameterDirection, Boolean, Byte, Byte, String, DataRowVersion, Object)


Initializes a new instance of the SqlParameter class that uses the parameter name, the type of the parameter, the size of the parameter, a ParameterDirection, the precision of the parameter, the scale of the parameter, the source column, a DataRowVersion to use, and the value of the parameter.

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

public SqlParameter(
	string parameterName,
	SqlDbType dbType,
	int size,
	ParameterDirection direction,
	bool isNullable,
	byte precision,
	byte scale,
	string sourceColumn,
	DataRowVersion sourceVersion,
	object value


Type: System.String

The name of the parameter to map.

Type: System.Data.SqlDbType

One of the SqlDbType values.

Type: System.Int32

The length of the parameter.

Type: System.Data.ParameterDirection

One of the ParameterDirection values.

Type: System.Boolean

true if the value of the field can be null; otherwise false.

Type: System.Byte

The total number of digits to the left and right of the decimal point to which Value is resolved.

Type: System.Byte

The total number of decimal places to which Value is resolved.

Type: System.String

The name of the source column (SourceColumn) if this SqlParameter is used in a call to Update.

Type: System.Data.DataRowVersion

One of the DataRowVersion values.

Type: System.Object

An Object that is the value of the SqlParameter.

Exception Condition

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

The Size and Precision are inferred from the value of the dbType parameter if they are not explicitly set in the size and precision parameters.

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, 11, ParameterDirection.Input,
        true, 0, 0, "Description", DataRowVersion.Current, 
        "garden hose");
    parameter.IsNullable = true;


.NET Framework
Available since 1.1
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