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SqlParameter Constructor (String, SqlDbType, Int32, String)

SqlParameter Constructor (String, SqlDbType, Int32, String)

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 Sub New ( _
	parameterName As String, _
	dbType As SqlDbType, _
	size As Integer, _
	sourceColumn As String _


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.String

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


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 Sub AddSqlParameter(ByVal command As SqlCommand)

    Dim parameter As New SqlParameter("@Description", _
        SqlDbType.VarChar, 88, "Description")
    With parameter
        .IsNullable = True
        .Direction = ParameterDirection.Output
    End With

End Sub

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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