In ASP. net2.0, The gridview is added to the checkbox for full selection!

Last Update:2018-12-07 Source: Internet

Author: User

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

<% @ Page Language = "C #" autoeventwireup = "true" codefile = "gridview_checkboxcolumn.aspx.cs" inherits = "gridsamples_gridview_checkboxcolumn" %>

<! 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> No title page </title>
<Script language = "JavaScript" type = "text/JavaScript">
Function selectall (OBJ)
{
VaR thetable = obj. parentelement;
VaR I;
VaR J = obj. parentelement. cellindex;

For (I = 0; I <thetable. Rows. length; I ++)
{
VaR objcheckbox = thetable. Rows [I]. cells [J]. firstchild;
If (objcheckbox. Checked! = NULL) objcheckbox. Checked = obj. checked;
}
}
</SCRIPT>
</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Asp: gridview id = "gridview1" runat = "server" allowpaging = "true" autogeneratecolumns = "false"
Datakeynames = "ID" performanceid = "accessperformance1" allowsorting = "true" ondatabinding = "gridview1_databinding" onrowdatabound = "gridview1_rowdatabound">
<Columns>
<Asp: templatefield>
<Itemtemplate>
<Asp: checkbox id = "checkbox1" runat = "server" Checked = "true" text = '<% # databinder. eval (container. dataitem, "ID") %> '/>
</Itemtemplate>
<Headertemplate>
& Nbsp; <input id = "checkall" type = "checkbox" onclick = "selectall (this);"/> select all
</Headertemplate>
</ASP: templatefield>
<Asp: boundfield datafield = "ID" headertext = "ID" insertvisible = "false" readonly = "true"
Sortexpression = "ID"/>
<Asp: boundfield datafield = "name" headertext = "name" sortexpression = "name"/>
<Asp: boundfield datafield = "sex" headertext = "sex" sortexpression = "sex"/>
<Asp: boundfield datafield = "deptid" headertext = "deptid" sortexpression = "deptid"/>
</Columns>
</ASP: gridview>
& Nbsp;

<Asp: accessdatasource id = "accessdatasource1" runat = "server" datafile = "~ /App_data/test. mdb"
Selectcommand = "select [ID], [name], [sex], [deptid] from [employees]"> </ASP: accessdatasource>
<Asp: button id = "button1" runat = "server" onclick = "button#click" text = "showallselecteditem"/>
<Asp: textbox id = "textbox1" runat = "server" width = "200px" readonly = "true"> </ASP: textbox> </div>
</Form>
</Body>
</Html>

********************************** **
*********************************** *
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 gridsamples_gridview_checkboxcolumn: system. web. UI. page
{< br> ///

// obtain or set the set of the selected items
///
protected arraylist selecteditems
{< br> Get
{< br> return (viewstate ["myselecteditems"]! = NULL )? (Arraylist) viewstate ["myselecteditems"]: NULL;
}< br> set
{< br> viewstate ["myselecteditems"] = value;
}< BR >}

Protected void page_load (Object sender, eventargs E)
{

}

Protected void gridview1_databinding (Object sender, eventargs E)
{
// Call the collectselected method to collect the selected items from the current page before each rebinding.
Collectselected ();
}

Protected void gridview1_rowdatabound (Object sender, gridviewroweventargs E)
{
// The processing here is to display the selected status
If (E. Row. rowindex>-1 & this. selecteditems! = NULL)
{
Datarowview ROW = E. Row. dataitem as datarowview;
Checkbox cb = E. Row. findcontrol ("checkbox1") as checkbox;
If (this. selecteditems. Contains (row ["ID"]. tostring ()))
CB. Checked = true;
Else
CB. Checked = false;
}
}
/// <Summary>
/// Collect the selected items from the current page
/// </Summary>
Protected void collectselected ()
{
Arraylist selecteditems = NULL;
If (this. selecteditems = NULL)
Selecteditems = new arraylist ();
Else
Selecteditems = This. selecteditems;

For (INT I = 0; I <this. gridview1.rows. Count; I ++)
{
String id = This. gridview1.rows [I]. cells [1]. text;
Checkbox cb = This. gridview1.rows [I]. findcontrol ("checkbox1") as checkbox;
If (selecteditems. Contains (ID )&&! CB. Checked)
Selecteditems. Remove (ID );
If (! Selecteditems. Contains (ID) & CB. Checked)
Selecteditems. Add (ID );
}
This. selecteditems = selecteditems;
}

Protected void button#click (Object sender, eventargs E)
{
// Finally, you must not forget to collect the selected information of the current page for the last time before performing operations on the selected items.
Collectselected ();

This. textbox1.text = string. empty;
Foreach (Object TMP in this. selecteditems)
This. textbox1.text + = TMP. tostring () + ",";
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

Sales Support

1 on 1 presale consultation

Chat Contact Sales
After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

Open a Ticket
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

Learn More

In ASP. net2.0, The gridview is added to the checkbox for full selection!

Contact Us

A Free Trial That Lets You Build Big!

Sales Support

After-Sales Support