选中复选框时如何选择frm gridview的值 [英] how to select values frm gridview when checkbox is checked

问题描述

我正在尝试通过选中网格视图中的复选框将邮件发送给选定的用户... 
，同时调试它不接受checkbox.checked = true .... 
请分享您的观点并指出编码中的错误... 
 
来源：
 
 <％@     Page    语言  =  C＃   调试  =  true     AutoEventWireup   = < span class =code-keyword> true    CodeFile   =  Default.aspx.cs   继承  =  _默认   ％> ;  
 <  ！DOCTYPE     html     PUBLIC  < span class =code-attribute>   -  // W3C // DTD    < span class =code-attribute> XHTML     1.0     Transitional // EN    http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">  
 <   html     xmlns   =  http： //www.w3.org/1999/xhtml\">  
 <   head     runat   = 服务器 >  
 <   title  >  <   / title  >  
 <   / head  >  
 < span class =code-key单词><   body  >  
 <  表格    id   =  form1    runat   =  server >  
 <   div  >  
 <   table  < span class =code-keyword>>  
 <   tr  >  
 <   td  >  
 subject 
 <   / td  >  
 <   td  >  
 <   asp：TextBox     ID   =   txtsubject    runat  < span class =code-keyword> =  server >  <   / asp：TextBox  >  
 <   / td  >  <跨越ss =code-keyword><   / tr  >  
 <   tr  >  
 <   td  > 消息< span class =code-keyword><   / td  >  
 <   td  >  
 <   asp：TextBox    < span class =code-attribute> ID   =  txtmessage    runat   = 服务器    TextMode   =  MultiLine >  <  < span class =code-leadattribute> / asp：TextBox  >  
 <   / td  >  
 < ;   / tr  >  
 <   / table  >  
 <   / div  >  
 <   div  >  
 <   / div  >  
 <   div  >  
 <   / div  >  
 <   div  >  
 < span class =code-keyword><   asp：按钮    ID   =  btnsubmit    runat   =  server    文字  = <跨班=code-keyword>发送    onclick   =  btnsubmit_Click    /  >  
 <   / div  >  
 <   asp：GridView     ID   =  GridView1    runat   =  server    AutoGenerateColumns   =  False >  
 <  列 >  
 <   asp ：TemplateField     HeaderText   =  sno >  
 <   ItemTemplate  >  
 <   asp：标签    ID   =  lbl1    runat   =  server < span class =code-attribute>  文本  ='  <％ #bind（  sno ）％> ' >  <   / asp：标签 >  
 <   / ItemTemplate  >  
 <   / asp：TemplateField  >  
 <   asp：TemplateField     HeaderText   = 名称 >  
 <   ItemTemplate  >  
 <   asp：Label     ID   =  lbl2    runat   =  server   文字  ='  < ;％ #bind（  name）％> ' >  <   / asp：标签 >  
 <   / ItemTemplate  >  
 <  < span class =code-leadattribute> / asp：TemplateField  >  
 <   asp：TemplateField     HeaderText  < span class =code-keyword> =  mail >  
 <   ItemTemplate  >  
 <   asp：标签   < span class =code-attribute> ID   =  lbl3    runat   =   server   文字 < span class =code-keyword> ='  <％ #bind（  mailid）％> ' < span class =code-keyword>>  <   / asp：Label  < span class =code-keyword>>  
 <   / ItemTemplate  >  
 <   / asp： TemplateField  >  
 <   asp：TemplateField  >  
 <   HeaderTemplate  >  
 <   asp：CheckBox     ID   =  chkhdr    runat   =  server    /  >  
 <   / HeaderTemplate  >  
 <   ItemTemplate  >  
 <   asp：CheckBox     ID   =  CheckBox1    runat   =  server  /  >  
 <   / ItemTemplate  >  
  <   / asp：TemplateField  >  
 <   /列 >  
 <   / asp：GridView  >  
 <   / form   >  
 <   / body  >  
 <   / html  >  
 aspx.cs文件................................ .................................................. 。
 
 
 
使用System; 
使用System.Collections.Generic; 
使用System.Linq; 
使用System.Web; 
使用System.Web.UI; 
使用System.Web.UI.WebControls; 
使用System.Configuration; 
使用System.Data; 
使用System.Data.SqlClient; 
使用System.Net.Mail; 
使用System.Net; 
 public partial class _Default：System.Web.UI.Page 
 {
 Class1 obj = new Class1（）; 
公共字符串主机，frommail，密码; 
 protected void Page_Load（object sender，EventArgs e）
 {
 DataSet ds = obj.display（）; 
 GridView1.DataSource = ds; 
 GridView1.DataBind（）; 
} 
 protected void btnsubmit_Click（object sender，EventArgs e）
 {
 MailMessage s = new MailMessage（）; 
 s.From = new MailAddress（[e-mail]）; 
 s.Subject = txtsubject.Text; 
 s.Body = txtmessage.Text; 
 foreach（GridView1.Rows中的GridViewRow行）
 {
 if（row.RowType == DataControlRowType.DataRow）
 {
 CheckBox chk =（CheckBox）行。的FindControl（ CheckBox1）; 
 {
 if（chk.Checked == true）
 {
 string email = row.Cells [2] .Text; 
 s.To.Add（电子邮件）; 
 SmtpClient smtp = new SmtpClient（）; 
 smtp.Host =smtp.gmail.com; 
 smtp.EnableSsl = true; 
 NetworkCredential p = new NetworkCredential（）; 
 smtp.UseDefaultCredentials = false; 
 smtp.Credentials = new System.Net.NetworkCredential（[e-mail]，******）; 
 smtp.EnableSsl = true; 
 smtp.Send（s）; 
} 
} 
} 
} 
} 
} 
 
 
 
类文件.. .................................................. ....................... 
 
 
使用System; 
使用System.Collections.Generic; 
使用System.Linq; 
使用System.Web; 
使用System.Configuration; 
使用System.Data; 
使用System.Data.SqlClient; 
使用System.Net.Mail; 
使用System.Net; 
 public class Class1 
 {
 string s1 = ConfigurationManager.ConnectionStrings [pri]。ToString（）; 
 SqlCommand cmd = new SqlCommand（）; 
 public DataSet display（）
 {
 using（SqlConnection con = new SqlConnection（s1））
 {
 cmd.Connection = con; 
 cmd.CommandType = CommandType.StoredProcedure; 
 cmd.CommandText =sp_display; 
 con.Open（）; 
 SqlDataAdapter da = new SqlDataAdapter（cmd）; 
 DataSet ds = new DataSet（）; 
 da.Fill（ds）; 
返回ds; 
} 
} 

解决方案

Hai



请使用更新面板进行网格视图和按钮单击，bcz页面加载你只需在gridview中加载数据，当你检查并点击按钮时，它再次重新启动页面，我的意思是页面锄头服务器所以再次出现页面加载事件，在页面加载事件你将编写gridview绑定，所以它再次绑定网格视图中的数据。



如果你使用gridview和button的更新面板，然后页面部分回发，我的意思是它不会完全重定向，所以gridview不再绑定。

 <   ajax：UpdatePanel     ID   =  UpdatePanel      runat   =  server    UpdateMode   = 条件 >  
 <   ContentTemplate  >  
 <   div  >  
 < span class =code-keyword><   asp：按钮    ID   =  btnsubmit    runat   =  server    文字  = 发送    onclick   =  btnsubmit_Click    /  >  
  <   / div  >  
 <   asp：GridView     ID   =  GridView   可见  =  false    runat   =  server      HeaderStyle-Width   =  200    HeaderStyle-BackColor   = ＃2B6292     HeaderStyle-ForeColor   = 白色    
   
             AllowSorting   =  true    AllowPaging   =  true   宽度  =  600    AutoGenerateColumns   = 错误    OnRowCreated   =  GridView_OnRowCreated    
   
             Dat aKeyNames   =  Id    onsorting   =  GridView_OnSort >  
 <  列 < span class =code-keyword>>  
 ... 
 <   /列 >  
 <   / asp：GridView  >  
 <   / ContentTemplate  >  
 <  触发器 >  
 <   ajax：AsyncPostBackTrigger     ControlID   =  btnsubmit  /  >  
 <   /触发器 >  
 <   / ajax：UpdatePanel  >  

赞这个尝试...

嗨......

<前lang =cs> 字符串 mail = stirng.Empty;
foreach （GridViewRow gdrw in grid1.Rows）
{
CheckBox chbx =（CheckBox）gdrw.FindControl（ Checkboxid）;
if （chbx！= null & amp;& amp; chbx.Checked）
{
mail =（（Label）gdrw.FindControl（ lblmail ））。文本;
// lblmail是您绑定mailID的标签的ID。
// 此处邮件已准备好您的mailid。在这里进行操作。
}
}

谢谢你

I'm trying to send mails to selected users by selecting check box in grid view...
while debugging its not taking checkbox.checked=true....
kindly share your view and point out the mistake in codings...

source :

<%@ Page Language="C#" Debug="true" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
subject
</td>
<td>
<asp:TextBox ID="txtsubject" runat="server"></asp:TextBox>
</td> </tr>
<tr>
<td>message</td>
<td>
<asp:TextBox ID="txtmessage" runat="server" TextMode="MultiLine"></asp:TextBox>
</td>
</tr>
</table>
</div>
<div>
</div>
<div>
</div>
<div>
<asp:Button ID="btnsubmit" runat="server" Text="Send" onclick="btnsubmit_Click" />
</div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField HeaderText="sno">
<ItemTemplate>
<asp:Label ID="lbl1" runat="server" Text='<%#bind("sno") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="name">
<ItemTemplate>
<asp:Label ID="lbl2" runat="server" Text='<%#bind("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="mail">
<ItemTemplate>
<asp:Label ID="lbl3" runat="server" Text='<%#bind("mailid") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkhdr" runat="server" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
</body>
</html>
aspx.cs file...................................................................................



using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Net.Mail;
using System.Net;
public partial class _Default : System.Web.UI.Page
{
Class1 obj = new Class1();
public string host, frommail, password;
protected void Page_Load(object sender, EventArgs e)
{
DataSet ds = obj.display();
GridView1.DataSource = ds;
GridView1.DataBind();
}
protected void btnsubmit_Click(object sender, EventArgs e)
{
MailMessage s = new MailMessage();
s.From = new MailAddress("[e-mail]");
s.Subject = txtsubject.Text;
s.Body = txtmessage.Text;
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
CheckBox chk = (CheckBox)row.FindControl("CheckBox1");
{
if (chk.Checked==true)
{
string email = row.Cells[2].Text;
s.To.Add(email);
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential p = new NetworkCredential();
smtp.UseDefaultCredentials = false;
smtp.Credentials = new System.Net.NetworkCredential("[e-mail]", "******");
smtp.EnableSsl = true;
smtp.Send(s);
}
}
}
}
}
}



class file...........................................................................


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Net.Mail;
using System.Net;
public class Class1
{
string s1 = ConfigurationManager.ConnectionStrings["pri"].ToString();
SqlCommand cmd = new SqlCommand();
public DataSet display()
{
using (SqlConnection con = new SqlConnection(s1))
{
cmd.Connection = con;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "sp_display";
con.Open();
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
return ds;
}
}

解决方案

Hai

Pls use update panel for ur grid view and button click,bcz in page load u just load data in gridview,when u check and click button ,it again redired page ,i mean page hoit the server so again page load event occur,in page load event u will write gridview bind ,so again it bind data in grid view.

if u use update panel for gridview and button,then page partial post back,i mean it will not full redirect ,so gridview not bind again.

<ajax:UpdatePanel ID="UpdatePanel"  runat="server" UpdateMode="Conditional">
				<ContentTemplate>
<div>
<asp:Button ID="btnsubmit" runat="server" Text="Send" onclick="btnsubmit_Click" />
</div>
					<asp:GridView ID="GridView" Visible="false" runat="server"  HeaderStyle-Width="200" HeaderStyle-BackColor="#2B6292" HeaderStyle-ForeColor="White" 

					AllowSorting="true" AllowPaging="true" Width="600" AutoGenerateColumns="False" OnRowCreated="GridView_OnRowCreated" 

					DataKeyNames="Id" onsorting="GridView_OnSort">
						<Columns>
							...
						</Columns>
					</asp:GridView>
				</ContentTemplate>
				<Triggers>
					<ajax:AsyncPostBackTrigger ControlID="btnsubmit"/>
				</Triggers>
			</ajax:UpdatePanel>

Like this try...

Hi...

string mail=stirng.Empty;
foreach (GridViewRow gdrw in grid1.Rows)
      {
          CheckBox chbx = (CheckBox)gdrw.FindControl("Checkboxid");
          if (chbx != null && chbx.Checked)
          {
              mail = ((Label)gdrw.FindControl("lblmail")).Text;
              //lblmail is ID of the label for which you are binding mailID.
              // here mail is ready with your mailid. Do the operation here.
          }
      }

Thank u

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