public onInput(input: any, column: IgxColumnComponent) {
     let operand = null;
     switch (column.dataType) {
         case DataType.Number:
             operand = IgxNumberFilteringOperand.instance().condition('equals');
         case DataType.Date:
             operand = IgxDateFilteringOperand.instance().condition('equals');
         default:
             operand = IgxStringFilteringOperand.instance().condition('contains');
     }
     this.grid1.filter(column.field, input.value, operand, column.filteringIgnoreCase);
 }

 toggleVisibility(name: string) {
     const col = this.grid1.getColumnByName(name);
     col.hidden = !col.hidden;
 }

 toggleColumn(name: string) {
     const col = this.grid1.getColumnByName(name);
     col.pinned = !col.pinned;
 }

 toggleColumn(name: string) {
     const col = this.grid1.getColumnByName(name);
     col.pinned ? col.pinned = false : col.pinned = true;
 }

 public clearInput(input: any, column: any) {
     input.value = null;
     this.grid1.clearFilter(column.field);
 }

   public filter(term) {
     this.grid1.filter("ProductName", term, IgxStringFilteringOperand.instance().condition("contains"));
 }