Asp. NET Dynamic add TextBox control __.net

Method One:

Foreground code aspx: <form id= "Form1" runat= "Server" > Please enter a quantity: <asp:textbox id= "TextBox1" runat= "Server" ></asp: textbox> <asp:button id= "Button1" runat= "Server" text= "OK" onclick= "Button1_click1"/> <div id= "Divcontrol" runat= "Server" > </div> <asp:button id= "Button2" runat= "Server" onclick= "button2_ Click "text=" submit all information "/> </form>

Background Code ASPX.CS:

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls; PublicPartialclassDefault2:System.Web.UI.Page {protectedvoidPage_Load (Objectsender, EventArgs e) {}///<summary>///first loop through the text box of the number you entered///</summar y>///<param name= "sender" ></param>///<param name= "E" ></param>protectedvoidButton1_click1 (Objectsender, EventArgs e) {AddTextbox (); }//Add TextBox dynamicallyPrivatevoidAddTextbox () { for(inti = 0; I < Convert.ToInt32 (TextBox1.Text); i++) {Label Li =NewLabel (); Li.                Text = (i + 1) + ". Username:"; TextBox T =NewTextBox ();                t.id = "txt" + i.tostring ();                Textboxbinds (t, i);                DivControl.Controls.Add (LI);                DIVCONTROL.CONTROLS.ADD (t); DIVCONTROL.CONTROLS.ADD (NewLiteralControl ("<br>")); }///<summary>///then submit all data///</summary>///<param name= "send Er "></param>///<param name=" E "></param>protectedvoidButton2_Click (Objectsender, EventArgs e) {AddTextbox ();intTxtcount = Convert.ToInt32 (TextBox1.Text); Verify that there is null data!, the validation must be placed after repeating circular textbox information, otherwise the returned textbox will not be displayed for(inti = 0; i < Txtcount; i++) {String txtValue = request.form["txt" + i.tostring ()];if(! Checkisnull (TxtValue)) {//if validation has a non conformance will not do the following database-related operations. return; }            } for(inti = 0; i < Txtcount;                i++) {Response.Write (request.form["TXT" + i.tostring ()] + "<br>");            Response.Write ("Now you can loop through the data in the database!"); }///<summary>///bind to data on duplicate commit///</summary>///<param name= " T "></param>///<param name=" I "></param>Private voidTextboxbinds (TextBox T,inti) {//Get its value through the name of the textboxstringTxtValue = request.form["txt" + i.tostring ()]; Determine if the value is emptyif(!            String.IsNullOrEmpty (TxtValue)) {//Is not NULL to assign the value of the text box T.text = TxtValue;        }///<summary>///Verify that the text box is empty! </summary>///<param name= "TxtValue" ></param>///<returns></returns>PrivateBOOLCheckisnull (String txtValue) {if(String.IsNullOrEmpty (TxtValue)) {LiteralControl LC =NewLiteralControl (); Lc.                Text = "<script>alert (/" Please enter text box information!/");</script>"; PAGE.CONTROLS.ADD (LC); returnfalse; } returntrue; }    }

Method Two:

The foreground uses JS to add the input type= "text" HTML control:

<!--The following HTML content can be dynamically entered with JS-->   <table>   <tr>   <td>    name </td><td>   sex </td><td> ID    </td></tr>    <tr>   <td>   <input type= "text"  name= "Txtname"  /> </td><td>   <select name= "Lstsex" ></select></td><td>    <input type= "text"  name= "Txtcerid"  />   </td></tr>   <tr>   <td>   <input type= "text"  name= "Txtname"  /></td ><td>   <select name= "Lstsex" ></select></td><td>   <input type= "text"  name= "Txtcerid"  />   </td></tr>   </ table> 

Background code: string[] arrname = request.form.getvalues ("txtname");    String[] arrsex  = request.form.getvalues ("Lstsex");    string[] arrcerid = request.form.getvalues ("Txtcerid");    for (int i=0;i<arrname.length;i++) {       //  get data in line I, Then you have to save it        string name = arrName[i];        string sex = arrSex[i];        string cerId = arrCerId[i];   }   

You can also use the Split method to intercept the value: string[] Strsprit = request.form["txtUserName"].     Split (', ');     for (int i = 0; i < strsprit.length i++) {Response.Write (strsprit[i]+ "<br>"); }