Επεξεργασία

Κοινή χρήση μέσω

OleDbParameter.Scale Property

  • Reference

Definition

Namespace:
System.Data.OleDb
Assembly:
System.Data.OleDb.dll
Assembly:
System.Data.dll
Package:
System.Data.OleDb v9.0.0
Source:
OleDbParameter.cs
Source:
OleDbParameter.cs
Source:
OleDbParameter.cs

Gets or sets the number of decimal places to which Value is resolved.

public:
 property System::Byte Scale { System::Byte get(); void set(System::Byte value); };
public byte Scale { get; set; }
[System.Data.DataSysDescription("DbDataParameter_Scale")]
public byte Scale { get; set; }
member this.Scale : byte with get, set
[<System.Data.DataSysDescription("DbDataParameter_Scale")>]
member this.Scale : byte with get, set
Public Property Scale As Byte

Property Value

Byte

The number of decimal places to which Value is resolved. The default is 0.

Implements

Scale
Attributes
DataSysDescriptionAttribute

Examples

The following example creates an OleDbParameter and sets some of its properties.

Public Sub CreateOleDbParameter()  
    Dim parameter As New OleDbParameter("Price", OleDbType.Decimal)  
    parameter.Value = 3.1416  
    parameter.Precision = 8  
    parameter.Scale = 4  
End Sub 'CreateOleDbParameter  

public void CreateOleDbParameter()   
 {  
    OleDbParameter parameter = new OleDbParameter("Price", OleDbType.Decimal);  
    parameter.Value = 3.1416;  
    parameter.Precision = 8;  
    parameter.Scale = 4;  
 }

Remarks

The Scale property is only used for decimal and numeric input parameters before calling the Prepare method of the OleDbCommand and to specify numeric output parameters.

Setting this property to a value other than the value in the database depends on the implementation of the data provider and may return an error code, truncate, or round data.

When using SQL Server Native Client 10 (or later), to bind a parameter whose type is Decimal, Numeric, VarNumeric, DBDate, or DBTimeStamp, you must manually specify an appropriate scale value.

Note

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.

Note

.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 to be inserted at the data source. If you are using .NET Framework version 1.0, validate the Precision and OleDbParameter of Decimal values before setting the parameter value. Scale values that exceed the Decimal parameter scale are still truncated.

Applies to

See also