GridView选择行

主要三种方法：Gridview自带的“选择”按钮，模板列生成的“hyperlink”以及“LinkButton”

(1)如何使用ASP.Net Gridview 的hyperlink打开新网页？

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:HyperLinkField DataNavigateUrlFormatString="product.aspx?id={0}" DataTextField="ID" HeaderText="详细" Text="详细" />
</Columns>
</asp:GridView>

(2)GridView弹出新页面/弹出制定大小位置新窗口：

方案一：简单的方法，新窗口不固定大小
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" >
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                            <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
                    </asp:HyperLinkField>
                            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                        </Columns>

 

                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>
DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。
软件开发网

方案二：精确控制弹出窗口大小位置
<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"
        DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

使用的是结合javascript的window.open方法

(3)LinkButton

大多数情况是给按钮CommandName，然后在RowCommand事件中处理

<Columns>
<asp:TemplateField>
    <ItemTemplate>
        <asp:LinkButton ID="lnkbtnUp" runat="server" CommandName="up">Up</asp:LinkButton> 
    </ItemTemplate>
</asp:TemplateField>
</Columns>

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "+")
    {
        int index = ((GridViewRow)((Button)e.CommandSource).NamingContainer).RowIndex;
        //如果是TemplateField
        string str = ((Label)(GridView1.Rows[index].FindControl("控件名"))).Text;
        //如果是BoundField
        string str = (GridView1.Rows[index].Cells[单元格索引].Text;
    }
}

HTML code
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="productid" DataSourceID="SqlDataSource1" OnSelectedIndexChanging="GridView1_SelectedIndexChanging">
    <Columns>
        <asp:BoundField DataField="productid" HeaderText="productid" InsertVisible="False"
            ReadOnly="True" SortExpression="productid" />
        <asp:BoundField DataField="productname" HeaderText="productname" SortExpression="productname" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Label ID="Label1" runat="server" Text='<%# Eval("productname") %>'></asp:Label>
               
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField ShowHeader="False">
            <ItemTemplate>
                <asp:LinkButton ID="lbtnSelect" runat="server" CausesValidation="False" CommandName="Select"
                    Text="选择"></asp:LinkButton>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=.\sqlexpress;Initial Catalog=Northwind;Integrated Security=True" ProviderName="System.Data.SqlClient" SelectCommand="select productid, productname from products"></asp:SqlDataSource>

 

C# code
protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
    //这里通过DataKeys的集合得到主键，不过前提是给GridView设置过DataKeyNames
    string productid = GridView1.DataKeys[e.NewSelectedIndex].Value.ToString();
    Response.Write(productid);
}

(4)GridView中选择按钮的使用方法

<script runat="server">
 
   void CustomersGridView_SelectedIndexChanged(Object sender, EventArgs e)
   {
     // Retrieve the company name from the appropriate cell.
     String companyName = CustomersGridView.SelectedRow.Cells[2].Text;
  
     // Display company name selected by the user.
     Message.Text = "You selected " + companyName + ".";
   }
 
</script>

<html>
   <body>
     <form runat="server">
     
       <h3>CommandField Example</h3>
     
       <asp:Label id="Message"
         forecolor="Red"
         runat="server"/>

       <asp:gridview id="CustomersGridView"
         datasourceid="CustomersSqlDataSource"
         autogeneratecolumns="false"
         datakeynames="CustomerID"
         onselectedindexchanged="CustomersGridView_SelectedIndexChanged"  
         runat="server">
       
         <columns>
           <asp:commandfield showselectbutton="true"
             buttontype="Image"
             selectimageurl="~\Images\SelectButton.jpg"
             headertext="Select Customer"/>
           <asp:boundfield datafield="CustomerID"
             headertext="Customer ID" />
           <asp:boundfield datafield="CompanyName"
             headertext="Company Name"/>
           <asp:boundfield datafield="Address"
             headertext="Address"/>
           <asp:boundfield datafield="City"
             headertext="City"/>
           <asp:boundfield datafield="PostalCode"
             headertext="ZIP Code"/>
           <asp:boundfield datafield="Country"
             headertext="Country"/>
         </columns>
       
       </asp:gridview>
           
       <!-- This example uses Microsoft SQL Server and connects   -->
       <!-- to the Northwind sample database. Use an ASP.NET      -->
       <!-- expression to retrieve the connection string value    -->
       <!-- from the Web.config file.                             -->
       <asp:sqldatasource id="CustomersSqlDataSource" 
         selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
         connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
         runat="server">
       </asp:sqldatasource>