How to validate multiple checkbox

Question

hi all
i have one form in which i have multiple checkbox options for the user to select each checkbox. i want to validate each chekbox when click on the Button control. if any checkbox is not checked it will show error for a particular checkbox that is not checked.

Rohatash Kumar · Answer

Ankit, thanks for this solution. But i want to use jquery to solve this problem.

Ankit Nandekar · Answer

Rohatash ur problem solved or not?

omkar mhaiskar · Answer

Dear Rohtash you can check it through Custom validator and use validation summary to show ewrror message. I think this will help: function ValidateAnswerRadio() { var list = document.getElementById(' ').childNodes; for(i = 0; i if(list[i].type == "radio") if(list[i].checked) return true; return false; } Required. And for validation summary use following code.

Ankit Nandekar · Answer

try this it will work using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class _Default : System.Web.UI.Page { int c = 0; protected void Page_Load(object sender, EventArgs e) { lblMsg.Visible = false; } protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { foreach (Control chkcontrol in form1.Controls) { if (chkcontrol.GetType().ToString() == "System.Web.UI.WebControls.CheckBox") { if (((CheckBox)chkcontrol).Checked == true) { c++; // write code when check box checked } else { if (c == 0) { lblMsg.Visible = true; lblMsg.Text = "please select CheckBox"; } } } } } }

How to validate multiple checkbox

Answers (4)