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SqlParameter.Precision Property

Gets or sets the maximum number of digits used to represent the Value property.

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

'Declaration
Public Property Precision As Byte

Property Value

Type: System.Byte
The maximum number of digits used to represent the Value property. The default value is 0. This indicates that the data provider sets the precision for Value.

Implements

IDbDataParameter.Precision

The Precision property is used by parameters that have a SqlDbType of Decimal.

You do not need to specify values for the Precision and Scale properties for input parameters, as they can be inferred from the parameter value. Precision and Scale are required for output parameters and for scenarios where you need to specify complete metadata for a parameter without indicating a value, such as specifying a null value with a specific precision and scale.

NoteNote

Use of this property to coerce data passed to the database is not supported. To round, truncate, or otherwise coerce data before passing it to the database, use the Math class that is part of the System namespace prior to assigning a value to the parameter's Value property.

NoteNote

  Microsoft .NET Framework data providers that are included with the .NET Framework version 1.0 do not verify the Precision or Scale of Decimal parameter values. This can cause truncated data being inserted at the data source. If you are using .NET Framework version 1.0, validate the Precision and Scale of Decimal values before setting the parameter value. When you use .NET Framework version 1.1 or a later version, an exception is thrown if a Decimal parameter value is set with an invalid Precision. Scale values that exceed the Decimal parameter scale are still truncated.

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


Private Sub AddSqlParameter(ByVal command As SqlCommand)

    Dim parameter As New SqlParameter("@Price", SqlDbType.Decimal)
    With parameter
        .Value = 3.1416
        .Precision = 8
        .Scale = 4
    End With

    command.Parameters.Add(parameter)
End Sub


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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