Creating dynamic textbox in asp using c#

Question

hi friends, please help me in creating textbox dynamically. if I click on button then it has to create textbox instantly. thanks in advance

Prabhu Raja · Answer

Hi, try this Attached Source Code...

Satyapriya Nayak · Answer

Hi Chiranjeevi, using System; using System.Data; using System.Configuration; 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 _Default : System.Web.UI.Page { Panel pnlTextBox; protected void Page_PreInit(object sender, EventArgs e) { //Create a Dynamic Panel pnlTextBox = new Panel(); pnlTextBox.ID = "pnlTextBox"; pnlTextBox.BorderWidth = 1; pnlTextBox.Width = 300; this.form1.Controls.Add(pnlTextBox); //Create a LinkDynamic Button to Add TextBoxes LinkButton btnAddtxt = new LinkButton(); btnAddtxt.ID = "btnAddTxt"; btnAddtxt.Text = "Add TextBox"; btnAddtxt.Click += new System.EventHandler(btnAdd_Click); this.form1.Controls.Add(btnAddtxt); //Recreate Controls RecreateControls("txtDynamic", "TextBox"); } protected void Page_Load(object sender, EventArgs e) { } protected void btnAdd_Click(object sender, EventArgs e) { int cnt = FindOccurence("txtDynamic"); CreateTextBox("txtDynamic-" + Convert.ToString(cnt + 1)); } private int FindOccurence(string substr) { string reqstr = Request.Form.ToString(); return ((reqstr.Length - reqstr.Replace(substr, "").Length) / substr.Length); } private void RecreateControls(string ctrlPrefix, string ctrlType) { string[] ctrls = Request.Form.ToString().Split('&'); int cnt = FindOccurence(ctrlPrefix); if (cnt > 0) { for (int k = 1; k { for (int i = 0; i { if (ctrls[i].Contains(ctrlPrefix + "-" + k.ToString()) && !ctrls[i].Contains("EVENTTARGET")) { string ctrlID = ctrls[i].Split('=')[0]; if (ctrlType == "TextBox") { CreateTextBox(ctrlID); } break; } } } } } private void CreateTextBox(string ID) { TextBox txt = new TextBox(); txt.ID = ID; txt.AutoPostBack = true; txt.TextChanged += new EventHandler(OnTextChanged); pnlTextBox.Controls.Add(txt); Literal lt = new Literal(); lt.Text = " "; pnlTextBox.Controls.Add(lt); } protected void OnTextChanged(object sender, EventArgs e) { TextBox txt = (TextBox)sender; string ID = txt.ID; ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", " alert('" + ID + " fired OnTextChanged event'); "); //Place the functionality here } } Thanks

Mayur Gujrathi · Answer

void CreateTextBoxes(Object sender, EventArgs e) { int n = Int32.Parse(txtTBCount.Text); // now, create n TextBoxes, adding them to the PlaceHolder TextBoxesHere for (int i = 0; i { TextBoxesHere.Controls.Add(new TextBox()); } // now, set the Text property of each TextBox IterateThroughChildren(this); } void IterateThroughChildren(Control parent) { foreach (Control c in parent.Controls) { if (c.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox") && c.ID == null) { // ...do something... } if (c.Controls.Count > 0) { IterateThroughChildren(c); } } }

Creating dynamic textbox in asp using c#

Answers (3)