Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

OleDbParameter.Value Property

Gets or sets the value of the parameter.

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

[TypeConverterAttribute(typeof(StringConverter))]
public override Object Value { get; set; }

Property Value

Type: System.Object
An Object that is the value of the parameter. The default value is null.

Implements

IDataParameter.Value

For input parameters, the value is bound to the OleDbCommand that is sent to the server. For output and return value parameters, the value is set on completion of the OleDbCommand and after the OleDbDataReader is closed.

When you send a null parameter value to the server, you must specify DBNull, not null. The null value in the system is an empty object that has no value. DBNull is used to represent null values.

If the application specifies the database type, the bound value is converted to that type when the provider sends the data to the server. The provider tries to convert any type of value if it supports the IConvertible interface. Conversion errors may result if the specified type is not compatible with the value.

Both the DbType and OleDbType properties can be inferred by setting the Value.

The Value property is overwritten by the Update method of IDbDataAdapter.

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

[Visual Basic]

Public Sub CreateOleDbParameter()
    Dim parameter As New OleDbParameter("Description", OleDbType.VarChar, 88)
    parameter.Value = "garden hose"
End Sub 'CreateOleDbParameter

[C#]

public void CreateOleDbParameter() 
 {
    OleDbParameter parameter = new OleDbParameter("Description", OleDbType.VarChar, 88);
    parameter.Value = "garden hose";
 }

.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
Show:
© 2015 Microsoft