Problem with dinamically generated controls in ASP.NET (C#)

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  12 years ago

  by chaosthunder

  Hieu Bui Minh

  Ho Chi Minh, Viet Nam

  Joined 12 years ago
  Hello! I am trying to generate web controls dynamically (running at server). In my page, I have a button to submit value of controls I've created (such as textbox, checkbox), my code is below: protected void dynamicControls() { con = data.GetConnection(); con.Open(); com.Connection = con; com.CommandText = "Type_GetAll"; reader = com.ExecuteReader(); table.Load(reader); double i=0,d=0,c=0; foreach (DataRow row in table.Rows) { i++; Label lit = new Label(); TextBox txt = new TextBox(); lit.ID = "lit" + i.ToString(); lit.Text = row.ItemArray[1].ToString(); lit.Visible = true; lit.Style["Position"] = "Absolute"; lit.Style["Top"] = c + "px"; lit.Style["Left"] = d + "px"; txt.ID = "txt" + i.ToString(); txt.Text = row.ItemArray[1].ToString(); txt.Style["Position"] = "Absolute"; txt.Style["Top"] = c + "px"; txt.Style["Left"] = Convert.ToString(d + lit.Text.Length*7) + "px"; c += 100; form1.Controls.Add(txt); form1.Controls.Add(lit); } con.Close(); } But when I run the web page, the controls is ok, verything is ok until I click the button. I dont know how to get the controls value that I've just created. Because when I click the button, I must write code in the Button_Click() function. And therefore, I can not get the local variables above in the FOR loop area. Do you know how to solve this problem. I am really appreciated your help. Goodluck to all and wish you a merry christmas!
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  12 years ago

  by royal ludhiana

  Royal Ludhiana

  Toronto, Canada

  Joined 14 years ago
  hi, Place your controls on a panel or a div control and make this control a web control(runat=server). Then you can loop through all the controls you have created and check the control type. Accordingly you can get the ID of the control and also the value. Regards, Royal
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  12 years ago

  by mazhar_qayyum

  Mazhar Qayyum

  , Pakistan

  Joined 12 years ago
  Also please wrap your posted code in the CODE tags, currently this is not readable. A wild guess could be to find the control. Royal is right you should better put it in some panel and then use the FindControl method of panel to find that newly added control.
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