The first time, not written. Directly to show the original file to everyone !! The principle is to use JS over all Checkbox to set all the Checkbox unchecked, and then set the clicked checkbox to select the following below. ! ASPX file <% @ Page language = "c #" Codebehind = "WebForm1.aspx.cs" AutoEventWireup = "false" Inherits = "DataGridCheck.WebForm1"%> Webform1 </ title> <meta content =" Microsoft Visual Studio .NET 7.1 "Name =" Generator "> <meta content =" c # "name =" code_language "> <meta content = "JavaScript" name = "vs_defaultClientScript"> <meta content = "http://schemas.microsoft.com/intellisense/ie5" name = "vs_targetSchema"> <SCRIPT language = "JavaScript"> function SetCheckBoxState () {VAR DOM = Document.all; var = event.srcelement; if (el.tagname == "infut" && el.type.tolowercase () == "checkbox") {for (i = 0; i <dom.length i ) {if (DOM [i] .tagname == "Input" && Dom [i] .type.tolowercase () == "checkbox") {dom [i] .checked = false;}}} el.checked = ! El.checked;} </ script> </ head> <body ms_positioning = "gridLayout"> <form id = "form1" method = "post" runat = "server"> <font face = "Song"> <ask: DataGrid ID = "DG" style = "z-index: 101; Left: 168px; position: Absolute; Top: 40px "Runat =" server "width =" 440px "autogeneratecolumns =" false "> <columns> <</p>
<p>asp: TemplateColumn> <ItemTemplate> <asp: CheckBox id = "chkExport" runat = "server"> </ asp: CheckBox> </ ItemTemplate> </ asp: TemplateColumn> <asp: BoundColumn DataField = "IntegerValue"> </ asp: BoundColumn> <asp: BoundColumn DataField = "StringValue"> </ asp: BoundColumn> <asp: BoundColumn DataField = "currencyValue"> </ asp: BoundColumn> </ Columns> </ asp: datagrid> <asp: button ID = "button =" z-index: 102; left: 168px; position: absolute; top: 8px "runat =" server "text =" display content "> </ asp: button> </ font> </ form> </ body> </ HTML> the following documents are CS using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.ui; use system.web.ui.webcontrols; using system.web.ui.htmlcontrols; Namespace DataGridCheck {/// <summary> /// WebForm1 summary description.</p>
<p>/// </ summary> public class WebForm1: System.Web.UI.Page {protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.DataGrid dg; private void Page_Load (object sender, System.eventargs e) {// Place the user code here to initialize the page if (! Page.ispostback) {dg.datasource = createDataSource (); DG.DATABIND ();}} iCollection createDataSource ()} iCollection createDataSource ()}} iCollection created () DataBe (); DTAROW DR; DT.COLUMNS.ADD (New Datacolumn ("IntegerValue", TypeOf (INT32))); DT.Columns.Add (New Datacolumn ("StringValue", TypeOf (String)); Dt.columns .Add ("currencyvalue", Typeof (Double))); for (int i = 0; i <9; i ) {DR = DT.NEWROW (); DR [0] = i; dr [1] = "Item" i.tostring (); DR [2] = 1.23 * (i 1); Dt.Rows.Add (DR);} DataView DV = New DataView (DT); Return DV;} #Region Web The code generated by the Form Designer Override Protected Void OnNit (Eventargs E) {// // Codegen: This call is required for the ASP.NET Web Form Designer. // InitializeComponent (); base.onit (e);} /// <summary> /// Designer Supports the required method - Do not use the code editor to modify the // / this method.</p></div><div class="text-center mt-3 text-grey">
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