Direction Property

IDataParameter.Direction Property


Gets or sets a value indicating whether the parameter is input-only, output-only, bidirectional, or a stored procedure return value parameter.

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

ParameterDirection Direction { get; set; }

Property Value

Type: System.Data.ParameterDirection

One of the ParameterDirection values. The default is Input.

Exception Condition

The property was not set to one of the valid ParameterDirection values.

If the ParameterDirection is output, and execution of the associated SqlCommand does not return a value, the IDataParameter contains a null value.

After the last row from the last resultset is read, Output, InputOut, and ReturnValue parameters are updated.

The following example creates an instance of the implementing class, SqlParameter, and sets some of its properties.

public void CreateSqlParameter() 
    SqlParameter parameter = new SqlParameter(
        "@Description", SqlDbType.VarChar);
    parameter.Direction = ParameterDirection.Output;

.NET Framework
Available since 1.1
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