DataColumn Constructor (String^, Type^, String^)
.NET Framework (current version)
Initializes a new instance of the DataColumn class using the specified name, data type, and expression.
Assembly: System.Data (in System.Data.dll)
Parameters
- columnName
-
Type:
System::String^
A string that represents the name of the column to be created. If set to null or an empty string (""), a default name will be specified when added to the columns collection.
- dataType
-
Type:
System::Type^
A supported DataType.
- expr
-
Type:
System::String^
The expression used to create this column. For more information, see the Expression property.
| Exception | Condition |
|---|---|
| ArgumentNullException | No dataType was specified. |
.NET Framework
Available since 1.1
Available since 1.1
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