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Searches for the specified OMathMatrixColumn and returns the zero-based index of the first occurrence within the entire collection.
public int IndexOf(OMathMatrixColumn item)
Public Function IndexOf(item As OMathMatrixColumn) As Integer
| Type | Name | Description | 
|---|---|---|
| OMathMatrixColumn | item | The OMathMatrixColumn to locate in the collection.  | 
    
| Type | Description | 
|---|---|
| int | The zero-based index of the first occurrence of column within the entire collection, if found; otherwise, -1.  |