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  • Response.Write("alert('hi')");显示在页面上

     Response.Write("alert('hi')");显示在页面上

    Response.Write("<script   language=javascript>alert('d');</script>");
    是弹出提示框,而且必须是在.cs页面,

    在html页面中的
    <script runat="server">
    Response.Write("<script   language=javascript>alert('d');</script>");
    </script>
    报错:Newline in constant

    在html页面中
    即便是后台有cs文件也不会触发Page_Load事件
    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="temp.aspx.cs" Inherits="temp" %>

    <script runat="server">
    void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
     {

    ..........................
    }
    </script>

    如果把上述方法放进后台cs文件
    page_load()
    {
    }
    void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
     {

    ..........................
    }
    page_load是空的,所以页面就呈现出来的是空的。



    可以在Page_Load事件里面写:
    this.CustomersGridView.DataSource = this.CustomersSqlDataSource;
    this.CustomersGridView.DataBind();

    这样Page_Load 时就有内容了。
    aspx页面:
    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="temp.aspx.cs" Inherits="temp" %>

    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title>GridView</title>
    </head>
     
    <body>
        
    <form id="Form1" runat="server">
          
    <h3>ButtonField Example</h3>      
          
    <asp:label id="Message"
            forecolor
    ="Red"
            runat
    ="server"/>                    
          
    <!-- Populate the Columns collection declaratively. -->
          
    <asp:GridView id="CustomersGridView" 
             AutoGenerateColumns
    ="false"
              OnRowCommand
    ="CustomersGridView_RowCommand"
             runat
    ="server">                
             
    <Columns>                               
              
    <asp:ButtonField  ButtonType="Button" 
                CommandName
    ="Select" HeaderText="Select Customer" 
                 Text
    ="Select"/>             
              
    <asp:BoundField  DataField="CompanyName" 
                HeaderText
    ="Company Name"/>
              
    <asp:BoundField DataField="ContactName" 
                HeaderText
    ="Contact Name"/>                
             
    </Columns>               
          
    </asp:GridView>
                      
          
            
    <asp:sqldatasource 
            id
    ="CustomersSqlDataSource" 
            selectcommand
    ="SELECT [CustomerID], [CompanyName], [ContactName], [ContactTitle] FROM [Customers]"
            connectionstring
    ="<%$ ConnectionStrings:NorthwindConnectionString %>"
            runat
    ="server">
            
    </asp:sqldatasource>            
        
    </form>
     
    </body>
    </html>

    cs页面:
    using System;
    using System.Data;
    using System.Configuration;
    using System.Collections;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;

    public partial class temp : System.Web.UI.Page
    {
        
    protected void Page_Load(object sender, EventArgs e)
        
    {
            
    this.CustomersGridView.DataSource = this.CustomersSqlDataSource;
            
    this.CustomersGridView.DataBind();
        }

        
    public void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
        
    {
            
    // If multiple ButtonField column fields are used, use the
            
    // CommandName property to determine which button was clicked.
            if (e.CommandName == "Select")
            
    {

                
    // Convert the row index stored in the CommandArgument     
                
    // property to an Integer.      
                int index = Convert.ToInt32(e.CommandArgument);//Get the Argument for the Command   
                Response.Write("<script   language=javascript>alert('" + index + "');</script>"); 

                
    // Get the last name of the selected author from the appropriate      
                
    // cell in the GridView control.
                GridViewRow selectedRow = CustomersGridView.Rows[index];
                TableCell contactName 
    = selectedRow.Cells[1];
                
    string contact = contactName.Text;

                
    // Display the selected author.
                Message.Text = "You selected " + contact + ".";
            }

        }

    }

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  • 原文地址:https://www.cnblogs.com/simhare/p/820559.html
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