public ItemSelectedEventArgs(string columnName, BrowserColumnController.ColumnType columnType, int selectionIndex, string selectionName)
 {
     this.columnName     = columnName;
     this.columnType     = columnType;
     this.selectionIndex = selectionIndex;
     this.selectionName  = selectionName;
 }
 public PageChangedEventArgs(string columnName, BrowserColumnController.ColumnType columnType, int pageChange)
 {
     this.columnName = columnName;
     this.columnType = columnType;
     this.pageChange = pageChange;
 }