First, page
<% @ Page language = "c #" codebehind = "Webform1.aspx.cs" autoeventwireup = "false" inherits = "Welshem.Webform1"%>
Webform12 </ title> <meta name =" generator "content =" Microsoft Visual Studio .NET 7.1> <meta name = "code_language" content = "c #"> <meta Name = "vs_defaultclientscript" Content = "javascript"> </ head> <body ms_positioning = "gridLayout"> <form id = "form1" method = "post" runat = "server"> <table align = "center" width = "500"> <Tr> <TD> <TD> <asp: DataGrid ID = "DataGrid1" runat = "server" autogeneratecolumns = "false" width = "495px"> < Headerstyle Horizontalalign = "Center"> </ headerstyle> <columns> <! Read-only binding columns for data that is not allowed to change in editing state (delete first when using) -> <ask: BoundColumn Datafield = "Affairid" readonly = "true" Headeertext = "Number" /> <! - Conventional Timing Column, display as text box in editing state (first deleted first) -> <ask: B OundColumn Datafield = "AffairContent" Headertext = "Content" /> <! - Read only hidden binding columns, hide the original data in the drop-down list (deleted first when using it) -> <ask: boundcolumn visible = "false" Datafield = "Affairstate" readonly = "true"</p>
<p>Headertext = "Status" /> <! - Template column, used to implement other editing domains of non-text box in editing state (delete first) -> <ask: templatecolumn headertext = "Status"> <! - Modular template, presented in non-editing state (deleted first) -> <itemtemplate> <ask: label id = label1 runat = "server" text = '<% # databinder.eval (container, " DataItem.Affairstate ")%> '/> </ itemtemplate> <! - Edit template, appearance in editing (deleted first) -> <edititemtemplate> <! - drop-down list, dynamic tie Ding (deleted first) -> <ask: DropDownList ID = "cbostate" runat = "server" width = "100px" /> </ edititemtemplate> </ ask: templateColumn> <! - Edit button column ( Delete first) -> <asp: editcommandcolumn buttonType = "Pushbutton" UpdateText = "update" CancelText = "Cancel" edittext = "Edit"> <itemStyle Horizontalalign = "Center"> </ itemStyle> </ asp: EditCommandColumn> </ columns> </ asp: datagrid> </ td> </ tr> </ table > </ Form> </ body> </ html> two, code</p>
<p>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; using System.Web.UI.WebControls Using system.web.ui.htmlcontrols; Namespace Welshem {/// <summary> /// WebForm1 summary. /// </ summary> public class WebForm1:! System.Web.UI.Page {protected System.Web.UI.WebControls.DataGrid DataGrid1; private void Page_Load (object sender, System.EventArgs e) {if (this.IsPostBack ) {This.bind ();}} / * For direct trial, there is no database. Using data that is dynamically generated and maintained with ViewState is changed from the database from the database through ADO.NET to obtain * / private data getData () {if (! This.ispostback) {dataable dt = new dataable (); DT .Columns.add ("Affairid", TypeOf (String)); DT.Columns.Add ("AffairContent", TypeOf (String)); DT.COLUMNS.ADD ("Affairstate", TypeOf (String)); for (int i = 1; i <10; i ) {dt.rows.add (new object [] {"000" i.tostring (), "to be filled", "Prepare"});} this.viewstate [" DT "] = dt;} return (DATATABLE) THISTATE [" DT "];} private void bind () {dataable dt = this.getdata (); dt.defaultview.sort = dt.columns [0] .columnname This.dataGrid1.datasource = dt.defaultview; this.dataGrid1.database ();} #Region Web Form Designer Generated Code Override Protected Void OnInit (Eventargs E) {// // Codegen: This call is ASP. The NET Web Form Designer is required. // InitializeComponent (); base.onit (e);} /// <summary> /// Designer Supports the required method - Do not use the code editor to modify the // / this method.</p>
<p>/// </ summary> private void InitializeComponent () {this.DataGrid1.CancelCommand = new System.Web.UI.WebControls.DataGridCommandEventHandler (this.DataGrid1_CancelCommand); this.DataGrid1.EditCommand = new System.Web.UI. WebControls.DataGridCommandEventHandler (this.DataGrid1_EditCommand); this.DataGrid1.UpdateCommand = new System.Web.UI.WebControls.DataGridCommandEventHandler (this.DataGrid1_UpdateCommand); this.DataGrid1.ItemDataBound = new System.Web.UI.WebControls.DataGridItemEventHandler ( this.DataGrid1_ItemDataBound); this.Load = new System.EventHandler (this.Page_Load);} #endregion private void DataGrid1_CancelCommand (object source, System.Web.UI.WebControls.DataGridCommandEventArgs e) {this.DataGrid1.EditItemIndex = -1 ; this.Bind ();} private void DataGrid1_EditCommand (object source, System.Web.UI.WebControls.DataGridCommandEventArgs e) {this.DataGrid1.EditItemIndex = e.Item.ItemIndex; this.Bind (); / * Controls the column wide of the second column editing item Since the E.Iitem also points to the original position, the E.Item * / ((TextBox) this.DataGrid1.Items [E.ITEM .Itemindex] .cells [1] .controls [0]). Width = 80;} private void DataGrid1_updateCommand (Object Source, System.Web.ui.WebControls.DataGridCommandEventArgs E) {/ * Read Reading Column, can directly from the corresponding unit Pick up the text format: E.Item.cells [i] .text i is the list * / string AID = E.Item.cells [0] .text; / * Generally binding column, presented the text box, so you want Value format from the control: (TextBox) E.cells [i] .controls [0]). Text i is a list * / string acontent = ((TextBox) E.Item.cells [1] .controls [0]). TEXT; / * Template column has a medium template, three types of editing:</p></div><div class="text-center mt-3 text-grey">
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