At least three possibilities come to mind

(1) Subclass the grid, and put the methods in that class
The grids you use will be based on that class

(2) create a class that implements those methods
Add it to the grids that will use it
Call the methods of that class

(3) Extension methods
- either for all grids
- or for a subclass of the grid's class


There will be other ways


>Hi everybody,
>
>How can I implement common logic for different grids?
>
>Say, right now I have:
>
>

>  #region Format Order Items Grid (New Order Page)
>        /// <summary>
>        /// Format the Order Items grid.
>        /// </summary>
>        /// <param name="dt"></param>
>        private void FormatOrderItemsGrid(OrderDetailsDS.OrderDetailsDataTable dt)
>        {
>            if (_gridStyleItem == null)
>            {
>                _gridStyleItem = new DataGridTableStyle();
>                this.grdOrderItems.TableStyles.Add(_gridStyleItem);
>                this.grdOrderItems.TableStyles[0].MappingName = dt.TableName;
>                //this.Width = 220;
>                //this.grdOrderItems.Width = 220;
>
>                //Order No column               
>
>                //Order Item Column
>                DataGridTextBoxColumn colManPartNo = new DataGridTextBoxColumn();
>                //colManPartNo.Owner = this.grdOrderItems;
>                colManPartNo.HeaderText = "Item No";
>                colManPartNo.MappingName = "ItemNo";
>                colManPartNo.Width = ((this.grdOrderItems.Width * 20) / 100);
>                //colManPartNo.Alignment = HorizontalAlignment.Left;
>
>                // Unfortunately the Description column is not in OrderDetails table
>                //Order Item Description
>                DataGridTextBoxColumn colDescription = new DataGridTextBoxColumn();
>                //colDescription.Owner = this.grdOrderItems;
>                colDescription.HeaderText = "Description";
>                colDescription.MappingName = "Description";
>                colDescription.Width = ((this.grdOrderItems.Width * 40) / 100);
>                //colDescription.Alignment = HorizontalAlignment.Left;
>
>                DataGridTextBoxColumn colQuantity = new DataGridTextBoxColumn();
>                //colQuantity.Owner = this.grdOrderItems;
>                colQuantity.HeaderText = "Qty";
>                colQuantity.MappingName = "Qty";
>                colQuantity.Width = ((this.grdOrderItems.Width * 10) / 100);
>                //colQuantity.Alignment = HorizontalAlignment.Center;
>
>                //Order Item Price
>                DataGridTextBoxColumn colPrice = new DataGridTextBoxColumn();
>                //colPrice.Owner = this.grdOrderItems;
>                colPrice.HeaderText = "Price";
>                colPrice.MappingName = "Price";
>                colPrice.Width = ((this.grdOrderItems.Width * 15) / 100);
>                //colPrice.Alignment = HorizontalAlignment.Right;
>                // Setup table mapping name
>
>                //Order Item Total Price
>                DataGridTextBoxColumn colTotalPrice = new DataGridTextBoxColumn();
>                //colTotalPrice.Owner = this.grdOrderItems;
>                colTotalPrice.HeaderText = "Total";
>                colTotalPrice.MappingName = "TotalPrice";
>                colTotalPrice.Width = ((this.grdOrderItems.Width * 15) / 100);
>                //colTotalPrice.Alignment = HorizontalAlignment.Right;
>
>                // Setup table mapping name
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colManPartNo);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colDescription);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colQuantity);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colPrice);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colTotalPrice);
>                this.grdOrderItems.RowHeadersVisible = false;
>            }
>            this.grdOrderItems.DataSource = dt;
>            this.grdOrderItems.Refresh();
>        }
>        #endregion
>        #region Format Order Details Grid (View page)
>        private void FormatOrderDetailsGrid(OrderDetailsDS.OrderDetailsDataTable dt)
>        {
>            if (_gridStyleItem == null)
>            {
>                _gridStyleItem = new DataGridTableStyle();
>                this.grdOrderDetails.TableStyles.Add(_gridStyleItem);
>                this.grdOrderDetails.TableStyles[0].MappingName = dt.TableName;
>                //this.Width = 220;
>                //this.grdOrderItems.Width = 220;
>
>                //Order No column               
>
>                //Order Item Column
>                DataGridTextBoxColumn colManPartNo = new DataGridTextBoxColumn();
>                //colManPartNo.Owner = this.grdOrderItems;
>                colManPartNo.HeaderText = "Item No";
>                colManPartNo.MappingName = "ItemNo";
>                colManPartNo.Width = ((this.grdOrderDetails.Width * 20) / 100);
>                //colManPartNo.Alignment = HorizontalAlignment.Left;
>
>                // Unfortunately the Description column is not in OrderDetails table
>                //Order Item Description
>                DataGridTextBoxColumn colDescription = new DataGridTextBoxColumn();
>                //colDescription.Owner = this.grdOrderItems;
>                colDescription.HeaderText = "Description";
>                colDescription.MappingName = "Description";
>                colDescription.Width = ((this.grdOrderDetails.Width * 40) / 100);
>                //colDescription.Alignment = HorizontalAlignment.Left;
>
>                DataGridTextBoxColumn colQuantity = new DataGridTextBoxColumn();
>                //colQuantity.Owner = this.grdOrderItems;
>                colQuantity.HeaderText = "Qty";
>                colQuantity.MappingName = "Qty";
>                colQuantity.Width = ((this.grdOrderDetails.Width * 10) / 100);
>                //colQuantity.Alignment = HorizontalAlignment.Center;
>
>                //Order Item Price
>                DataGridTextBoxColumn colPrice = new DataGridTextBoxColumn();
>                //colPrice.Owner = this.grdOrderItems;
>                colPrice.HeaderText = "Price";
>                colPrice.MappingName = "Price";
>                colPrice.Width = ((this.grdOrderDetails.Width * 15) / 100);
>                //colPrice.Alignment = HorizontalAlignment.Right;
>                // Setup table mapping name
>
>                //Order Item Total Price
>                DataGridTextBoxColumn colTotalPrice = new DataGridTextBoxColumn();
>                //colTotalPrice.Owner = this.grdOrderItems;
>                colTotalPrice.HeaderText = "Total";
>                colTotalPrice.MappingName = "TotalPrice";
>                colTotalPrice.Width = ((this.grdOrderDetails.Width * 15) / 100);
>                //colTotalPrice.Alignment = HorizontalAlignment.Right;
>
>                // Setup table mapping name
>                this.grdOrderDetails.TableStyles[0].GridColumnStyles.Add(colManPartNo);
>                this.grdOrderDetails.TableStyles[0].GridColumnStyles.Add(colDescription);
>                this.grdOrderDetails.TableStyles[0].GridColumnStyles.Add(colQuantity);
>                this.grdOrderDetails.TableStyles[0].GridColumnStyles.Add(colPrice);
>                this.grdOrderDetails.TableStyles[0].GridColumnStyles.Add(colTotalPrice);
>                this.grdOrderDetails.RowHeadersVisible = false;
>            }
>            this.grdOrderDetails.DataSource = dt;
>            this.grdOrderDetails.Refresh();        }
>
>        #endregion
>        #endregion

>
>The code is exactly the same but applied to different grids, would I be able to pass the grid as a parameter and use GridParameter instead of this.grdOrderDetails through the code?
>
>I also have the same problem with MouseUp event. I want to use the same code for two different grids with only slight difference that I want to set one private member of my form class in case of grdSearch and another in case of grdOrderDetails. What would be good way to implement this?
>
>Thanks a lot in advance.