Checks whether a specific column can be removed from the collection.
Assembly: System.Data (in System.Data.dll)
Return ValueType: System.Boolean
The column parameter is null.
The column does not belong to this collection.
The column is part of a relationship.
Another column's expression depends on this column.
The method performs several checks before returning a true or false result. This includes the following: whether the column exists, belongs to the table, or is involved in a constraint or relation.
Use the method before you try to remove any column from a collection. You can also use the Contains method to determine whether a particular column exists before you try to remove it.
The following example first uses the Contains method to determine whether a particular column is found in the collection. If found, the method tests whether the column can be removed. If so, the column is removed with the Remove method.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.