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DataColumn.ToString Method

Gets the Expression of the column, if one exists.

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

public override string ToString()

Return Value

Type: System.String
The Expression value, if the property is set; otherwise, the ColumnName property.

The following example uses the ToString property to return the default string of each member of a collection of DataColumn objects.

private void PrintColumns(DataTable table)
{
    // Print the default string of each column in a collection. 
    foreach(DataColumn column in table.Columns)
    {
        Console.WriteLine(column.ToString());
    }
}

.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

XNA Framework

Supported in: 3.0, 2.0, 1.0
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