将grdiview复选框选择的行从一个Web表单转移到另一个Web表单时遇到一个问题 [英] I have one problem while transfer grdiview checkbox selecteed rows from one web form to another webform
本文介绍了将grdiview复选框选择的行从一个Web表单转移到另一个Web表单时遇到一个问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在将grdiview复选框选择的行从一个Web表单转移到另一个Web表单时，我遇到一个问题
这是我的代码，但它只会传送一行，而我想传送所有选定的行
WebForm1 --------------------------
I have one problem while transfer grdiview checkbox selecteed rows from one web form to another webform
this is my code but it will transfer only one row i want to transfer all selected rows
WebForm1--------------------------
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SelectedGrid.aspx.cs" Inherits="SelectedGrid" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Add Delete Selected rows from one Gridview to another</title>
<script type = "text/javascript">
<!--
function Check_Click(objRef) {
//Get the Row based on checkbox
var row = objRef.parentNode.parentNode;
//Get the reference of GridView
var GridView = row.parentNode;
//Get all input elements in Gridview
var inputList = GridView.getElementsByTagName("input");
for (var i = 0; i < inputList.length; i++) {
//The First element is the Header Checkbox
var headerCheckBox = inputList[0];
//Based on all or none checkboxes
//are checked check/uncheck Header Checkbox
var checked = true;
if (inputList[i].type == "checkbox" && inputList[i] != headerCheckBox) {
if (!inputList[i].checked) {
checked = false;
break;
}
}
}
headerCheckBox.checked = checked;
}
function checkAll(objRef) {
var GridView = objRef.parentNode.parentNode.parentNode;
var inputList = GridView.getElementsByTagName("input");
for (var i = 0; i < inputList.length; i++) {
var row = inputList[i].parentNode.parentNode;
if (inputList[i].type == "checkbox" && objRef != inputList[i]) {
if (objRef.checked) {
inputList[i].checked = true;
}
else {
if (row.rowIndex % 2 == 0) {
row.style.backgroundColor = "#C2D69B";
}
else {
row.style.backgroundColor = "white";
}
inputList[i].checked = false;
}
}
}
}
//-->
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager2" runat="server">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<contenttemplate>
<asp:GridView ID="gvAll" runat="server" AllowPaging="true"
AlternatingRowStyle-BackColor="#C2D69B" AutoGenerateColumns="false"
Font-Names="Arial" Font-Size="11pt" HeaderStyle-BackColor="green"
OnPageIndexChanging="OnPaging" PageSize="10">
<columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkAll" runat="server" AutoPostBack="true"
onclick="checkAll(this);" />
</HeaderTemplate>
<itemtemplate>
<asp:CheckBox ID="chk" runat="server" AutoPostBack="true"
onclick="Check_Click(this)" />
</itemtemplate>
<asp:BoundField DataField="CustomerID" HeaderText="Customer ID"
HtmlEncode="false" />
<asp:BoundField DataField="ContactName" HeaderText="Contact Name"
HtmlEncode="false" />
<asp:BoundField DataField="City" HeaderText="City" HtmlEncode="false" />
</columns>
<alternatingrowstyle backcolor="#C2D69B" />
</contenttemplate>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click1"
Text="Button" />
<br />
</div>
</form>
</body>
</html>
C#Code -------------------------------------对于WebForm1
C#Code-------------------------------------For WebForm1
using System;
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
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;
using System.Collections;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindPrimaryGrid();
}
}
private void BindPrimaryGrid()
{
string constr = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
string query = "select CustomerID, ContactName, City from customers";
SqlConnection con = new SqlConnection(constr);
SqlDataAdapter sda = new SqlDataAdapter(query, con);
DataTable dt = new DataTable();
sda.Fill(dt);
gvAll.DataSource = dt;
gvAll.DataBind();
}
protected void OnPaging(object sender, GridViewPageEventArgs e)
{
GetData();
gvAll.PageIndex = e.NewPageIndex;
BindPrimaryGrid();
SetData();
}
private void GetData()
{
DataTable dt;
if (Session["SelectedRecords"] != null)
dt = (DataTable)ViewState["SelectedRecords"];
else
dt = CreateDataTable();
CheckBox chkAll = (CheckBox)gvAll.HeaderRow
.Cells[0].FindControl("chkAll");
for (int i = 0; i < gvAll.Rows.Count; i++)
{
if (chkAll.Checked)
{
dt = AddRow(gvAll.Rows[i], dt);
}
else
{
CheckBox chk = (CheckBox)gvAll.Rows[i]
.Cells[0].FindControl("chk");
if (chk.Checked)
{
dt = AddRow(gvAll.Rows[i], dt);
}
else
{
dt = RemoveRow(gvAll.Rows[i], dt);
}
}
}
Session["SelectedRecords"] = dt;
}
private void SetData()
{
CheckBox chkAll = (CheckBox)gvAll.HeaderRow.Cells[0].FindControl("chkAll");
chkAll.Checked = true;
if (ViewState["SelectedRecords"] != null)
{
DataTable dt = (DataTable)ViewState["SelectedRecords"];
for (int i = 0; i < gvAll.Rows.Count; i++)
{
CheckBox chk = (CheckBox)gvAll.Rows[i].Cells[0].FindControl("chk");
if (chk != null)
{
DataRow[] dr = dt.Select("CustomerID = '" + gvAll.Rows[i].Cells[1].Text + "'");
chk.Checked = dr.Length > 0;
if (!chk.Checked)
{
chkAll.Checked = false;
}
}
}
}
}
private DataTable CreateDataTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("CustomerID");
dt.Columns.Add("ContactName");
dt.Columns.Add("City");
dt.AcceptChanges();
return dt;
}
private DataTable AddRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("CustomerID = '" + gvRow.Cells[1].Text + "'");
if (dr.Length <= 0)
{
dt.Rows.Add();
dt.Rows[dt.Rows.Count - 1]["CustomerID"] = gvRow.Cells[1].Text;
dt.Rows[dt.Rows.Count - 1]["ContactName"] = gvRow.Cells[2].Text;
dt.Rows[dt.Rows.Count - 1]["City"] = gvRow.Cells[3].Text;
dt.AcceptChanges();
}
return dt;
}
private DataTable RemoveRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("CustomerID = '" + gvRow.Cells[1].Text + "'");
if (dr.Length > 0)
{
dt.Rows.Remove(dr[0]);
dt.AcceptChanges();
}
return dt;
}
protected void CheckBox_CheckChanged(object sender, EventArgs e)
{
//GetData();
//SetData();
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("Retrieve.aspx");
}
}
WEBForm2 ------------------------------------------------- ----
WEBForm2-----------------------------------------------------
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RetrievedGrid.aspx.cs" Inherits="RetrievedGrid" %>
<!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>
<asp:GridView ID="gvSelected" runat="server"
AutoGenerateColumns = "false" Font-Names = "Arial"
Font-Size = "11pt" AlternatingRowStyle-BackColor = "#C2D69B"
HeaderStyle-BackColor = "green" EmptyDataText = "No Records Selected" >
<columns>
<asp:BoundField DataField = "CustomerID" HeaderText = "Customer ID" />
<asp:BoundField DataField = "ContactName" HeaderText = "Contact Name" />
<asp:BoundField DataField = "City" HeaderText = "City" />
</columns>
</div>
</form>
</body>
</html>
C#代码--------------------------------对于webform2
C# Code --------------------------------For webform2
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
public partial class RetrievedGrid : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
BindSecondaryGrid();
}
private void BindSecondaryGrid()
{
DataTable dt = (DataTable)Session["SelectedRecords"];
gvSelected.DataSource = dt;
gvSelected.DataBind();
}
}
推荐答案
在Webform 1的GetData()方法中，您正在检查 Session 对象是否为空并从中获取数据 ViewState 对象，同时填充数据表.请参见下面的代码中的粗体突出显示-
In your GetData() method on Webform 1 you are checking Session object for null and picking up data from ViewState object while populating datatable. See the bold highlighting in the code below--
if (Session["SelectedRecords"] != null)
dt = (DataTable)ViewState["SelectedRecords"];
else
dt = CreateDataTable();
我怀疑您的代码是否可以正常工作?
I doubt the working of your code ???
这篇关于将grdiview复选框选择的行从一个Web表单转移到另一个Web表单时遇到一个问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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