DataColumn.Unique Property

 
System_CAPS_noteNote

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Gets or sets a value that indicates whether the values in each row of the column must be unique.

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

member Unique : bool with get, set

Property Value

Type: System.Boolean

true if the value must be unique; otherwise, false. The default is false.

Exception Condition
ArgumentException

The column is a calculated column.

As soon as this property is changed from false to true, a unique constraint will be created on this column to make sure that values are unique.

The following example creates new DataColumn, sets its properties, and adds it to a table's columns collection.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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