custom validator in asp.net cannnot stop excution of button click event

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In web form I used few textboxes and a button. I have used a Custom validator against a textbox which validated if Date of Birth is less than 18 years. If we choose date less than 18 years it will display an error. But the problem is Button click event is also executing. What can I do? Please advice.

XML

Date Of&nbsp; Birth:</td>
<td style="width: 292px">
    <asp:TextBox id="TextBox3" runat="server" onkeypress="javascript:return false;"ValidationGroup="a">
    </asp:TextBox>
    <asp:calendarextender id="CalendarExtender2" targetcontrolid="TextBox3" runat="server">
    </asp:calendarextender>
    <asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="TextBox3" ErrorMessage="CustomValidator" OnServerValidate="CustomValidator1_ServerValidate" Display="None" ValidationGroup="a">
    </asp:CustomValidator>

    <asp:ValidatorCalloutExtender ID="ValidatorCalloutExtender3" runat="server" TargetControlID="RequiredFieldValidator3">
    </asp:ValidatorCalloutExtender>
    <asp:ValidatorCalloutExtender ID="ValidatorCalloutExtender7" runat="server" TargetControlID="CustomValidator1">
    </asp:ValidatorCalloutExtender>

    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server"
    ErrorMessage="RequiredFieldValidator"  Display="None"
    ControlToValidate="TextBox3" SetFocusOnError="True" ValidationGroup="a">
    </asp:RequiredFieldValidator>
</td>

C#

protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string constr;
            constr = WebConfigurationManager.ConnectionStrings["JAPITConnectionString"].ConnectionString;
            SqlConnection con = new SqlConnection(constr);

            con.Open();
            string str = "insert   into  Doe_detail values('" + TextBox1.Text + "','" + TextBox2.Text + "','" + TextBox3.Text + "','" + TextBox4.Text + "','" + TextBox5.Text + "')";
            SqlCommand cmd = new SqlCommand(str, con);
            cmd.ExecuteNonQuery();
            con.Close();
            Label2.Visible = true;
            TextBox1.Text = "";
            TextBox2.Text = "";
            TextBox3.Text = "";
            TextBox4.Text = "";
            TextBox5.Text = "";
         
        }
        catch (Exception es)
        {
        }
    }

    protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
    {
        DateTime dtStart = DateTime.Parse(TextBox3.Text);
        TimeSpan sp = DateTime.Now - dtStart;

        if (sp.Days < 18 * 365)
        {
            args.IsValid = false;
            CustomValidator1.ErrorMessage = "You can not be under 18 years";
        }
        else
            args.IsValid = true;
    }

Posted 3-Apr-12 22:39pm

vidyade

Updated 3-Apr-12 23:32pm

Ankur^\m/

v2

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Comments

Nilesh Patil Kolhapur 4-Apr-12 5:00am

it happen because u write server side event try javascript or compare validator k if any doubt give rpy

Mohamed Mitwalli 4-Apr-12 14:36pm

you are right

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walterhevedeich · Answer 1 · 2012-04-19T21:32:00

For simple validations, you should be using Javascript since it does not require a postback to the server.

To answer your question, the reason why the code on the Button1_Click is still running is because you have not checked the value of the Page.IsValid property. You might want to add it on your code, like this:

C#

protected void Button1_Click(object sender, EventArgs e)
{
    if(Page.IsValid)
    {
        try
        {
            string constr;
            constr = WebConfigurationManager.ConnectionStrings["JAPITConnectionString"].ConnectionString;
            SqlConnection con = new SqlConnection(constr);
            
            con.Open();
            string str = "insert   into  Doe_detail values('" + TextBox1.Text + "','" + TextBox2.Text + "','" + TextBox3.Text + "','" + TextBox4.Text + "','" + TextBox5.Text + "')";
            SqlCommand cmd = new SqlCommand(str, con);
            cmd.ExecuteNonQuery();
            con.Close();
            Label2.Visible = true;
            TextBox1.Text = "";
            TextBox2.Text = "";
            TextBox3.Text = "";
            TextBox4.Text = "";
            TextBox5.Text = "";
        }
        catch (Exception es)
        {
        }
    }
}