Asp.net中用核选框显示数据的方法及ButtonColumn的使用方法
浏览：36日期：2023-04-15
<%@ Import Namespace="System.Data" %><html><script language="C#" runat="server">DataTable Cart;DataView CartView;ICollection CreateDataSource() {DataTable dt = new DataTable();DataRow dr;dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));dt.Columns.Add(new DataColumn("StringValue", typeof(string)));dt.Columns.Add(new DataColumn("DateTimeValue", typeof(DateTime)));dt.Columns.Add(new DataColumn("BoolValue", typeof(bool)));dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));for (int i = 0; i < 9; i++) {dr = dt.NewRow();dr[0] = i;dr[1] = "Item " + i.ToString();dr[2] = DateTime.Now;dr[3] = (i % 2 != 0) ? true : false;dr[4] = 1.23 * (i+1);dt.Rows.Add(dr);}DataView dv = new DataView(dt);return dv;}void Page_Load(Object sender, EventArgs e){if (Session["DG5_ShoppingCart"] == null) {Cart = new DataTable();Cart.Columns.Add(new DataColumn("Item", typeof(string)));Cart.Columns.Add(new DataColumn("Price", typeof(string)));Session["DG5_ShoppingCart"] = Cart;}else {Cart = (DataTable)Session["DG5_ShoppingCart"];} CartView = new DataView(Cart);ShoppingCart.DataSource = CartView;CartView.Sort="Item";ShoppingCart.DataBind();MyDataGrid.DataSource = CreateDataSource();MyDataGrid.DataBind();}void Grid_CartCommand(object sender, DataGridCommandEventArgs e) {DataRow dr = Cart.NewRow();// e.Item is the row of the table where the command fired// For bound columns the value is stored in the Text property of TableCellTableCell itemCell = e.Item.Cells[1];TableCell priceCell = e.Item.Cells[2];string item = itemCell.Text;string price = priceCell.Text;if (((LinkButton)e.CommandSource).CommandName == "AddToCart") {dr[0] = item;dr[1] = price;Cart.Rows.Add(dr);}else { //Remove from CartCartView.RowFilter = "Item='"+item+"'";if (CartView.Count > 0) { CartView.Delete(0);}CartView.RowFilter = "";}ShoppingCart.DataBind();}</script><body><h3><font face="Verdana">Using a Template Column in DataGrid</font></h3><form runat=server><table cellpadding="5"><tr valign="top"><td><b>Product List</b><asp:DataGrid id="MyDataGrid" runat="server"BorderColor="black"BorderWidth="1"GridLines="Both"CellPadding="3"CellSpacing="0"Font-Name="Verdana"Font-Size="8pt"HeaderStyle-BackColor="#aaaadd"AutoGenerateColumns="false"OnItemCommand="Grid_CartCommand"><Columns><asp:TemplateColumn HeaderText="Add/Remove"><ItemTemplate><asp:LinkButton ID=AddButton Text="Add" CommandName="AddToCart" ForeColor="blue" runat="server" /> <asp:LinkButton ID=RemoveButton Text="Remove" CommandName="RemoveFromCart" ForeColor="blue" runat="server" /></ItemTemplate></asp:TemplateColumn><asp:BoundColumn HeaderText="Item" DataField="StringValue"/><asp:BoundColumn HeaderText="Price" DataField="CurrencyValue" DataFormatString="{0:c}" ItemStyle-HorizontalAlign="right" /><asp:TemplateColumn HeaderText="Assembly required?"><ItemTemplate><asp:CheckBox ID=Chk1 Checked='<%# DataBinder.Eval(Container.DataItem, "BoolValue") %>' Enabled="false" runat="server" /></ItemTemplate></asp:TemplateColumn></Columns></asp:DataGrid></td><td><b>Shopping Cart</b><asp:DataGrid id="ShoppingCart" runat="server"BorderColor="black"BorderWidth="1"CellPadding="3"Font-Name="Verdana"Font-Size="8pt"HeaderStyle-BackColor="#aaaadd"/></td></tr></table></form></body></html>;
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