How to add Dynamic TextBox in ASP.NET C# - code samples

How to add TextBox Dynamically in ASP.NET C#
we can dynamically add controls in asp.net Pages. Hera i am explain how to add textbox control in our .aspx page. use PlaceHolder control for Holding the dynamically added control. Below am showing the C# code for generating textbox control. if u have any doubt on this article please comment below.


C# Code

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 Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
/// Function for Generating Dynamic Textbox
/// for creating TextBox Dynamically ,first create a Table then table Row then TableColumn
/// add TextBoxes in TableColumn with ID
/// Add TableColum in TableRow
/// Add TableRow In Table
/// Add that Table in PlaceHolder
public void GenarateTextBox(PlaceHolder PlaceHolder1, int RowCount, int ColCount)
{
PlaceHolder ph = new PlaceHolder();// PlaceHolder for Hold dynamically createing Text Box
Table objTable = new Table(); //
if (objTable.GetType().ToString().Equals("System.Web.UI.WebControls.Table") && PlaceHolder1.FindControl("objTable") == null)
{
objTable.ID = "objTable";
}
objTable.EnableViewState = true;
objTable.BorderWidth = Unit.Pixel(0);
objTable.CellPadding = 3;
objTable.CellSpacing = 0;
objTable.Width = Unit.Percentage(6);
TableCell objtableCell;
for (int j = 1; j <= RowCount; j++) 
{TableRow objTableRow = new TableRow();
for (int i = 1; i <= ColCount; i++)
 {  objtableCell = new TableCell();
    TextBox objTextBox = new TextBox();
if(objTextBox.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox")&&(PlaceHolder1.FindControl("TextBox"+j+i)==null)) 
     {  objtableCell.HorizontalAlign = HorizontalAlign.Left;
        objtableCell.VerticalAlign = VerticalAlign.Middle;
 objtableCell.Height = Unit.Pixel(10); 
objTextBox.ID = "TextBox" + j + i;
objTextBox.Text = "TextBox" + j + i;
objTextBox.CssClass = "textarea1"; 
objTextBox.Width = Unit.Pixel(100); 
objtableCell.Controls.Add(objTextBox); 
objTableRow.Cells.Add(objtableCell);
 } 
 } 
objtableCell = new TableCell(); 
objTable.Rows.Add(objTableRow); 
} 
PlaceHolder1.Controls.Add(objTable);
}
protected void Button1_Click(object sender, EventArgs e) { 
GenarateTextBox(PlaceHolder1,Convert.ToInt32(TextBox1.Text),Convert.ToInt32(TextBox2.Text)); 
 }  } 

Download Source Code Complete C# ASP.NET source Code