技术资料 > .Net专区 > Asp.Net开发 : Asp.net中用核选框显示数据的方法及ButtonColumn的使?/td>

Asp.net中用核选框显示数据的方法及ButtonColumn的使?/H1>
March 25,2004

<%@ 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 TableCell
      TableCell 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 Cart

         CartView.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>

Asp.net中用核选框显示数据的方法及ButtonColumn的使?/H1>March 25,2004

Asp.net中用核选框显示数据的方法及ButtonColumn的使?/H1>
March 25,2004