Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

How can I make a message box pop up if no selection is made from a dropdown list but the submit button is clicked.

Posted on 2008-10-01
4
Medium Priority
?
200 Views
Last Modified: 2013-12-17
I need to make a message box pop up if a user doesnt select anything from my ddl but clicks the submit button. Id like my statement to stop wokring at this point too. Any help would be superb, thanks!
protected void btnSubmit_Click(object sender, EventArgs e)
    {
 
 
 
 
 
 
 
        string connectionString = "Server = *****;Database =****;User ID =*****;Password=********;Trusted_Connection = False; MultipleActiveResultSets=True" ;
 
        SqlConnection myConnection = new SqlConnection(connectionString);
        myConnection.Open();
 
 
        string EngineerID=null;
 
        string commandString1 = "SELECT EngineerID FROM tblNewCategory Where Category like '" + ddlCategory.SelectedValue + "'";
 
        SqlCommand myCommand1 = new SqlCommand(commandString1, myConnection);
 
        SqlDataReader myReader1 = myCommand1.ExecuteReader();
        myReader1.Read();
 
        if (myReader1.HasRows)
        {
            EngineerID = myReader1.GetInt16(0).ToString();
 
        }
 
        myReader1.Close();

Open in new window

0
Comment
Question by:dwezil
  • 2
4 Comments
 
LVL 14

Expert Comment

by:Binuth
ID: 22612600

protected void btnSubmit_Click(object sender, EventArgs e)
    {
 
 
 if (comboBox1.SelectedIndex == -1)
			{
				MessageBox.Show("please select");
				return;
			}
 
 
 
 
        string connectionString = "Server = *****;Database =****;User ID =*****;Password=********;Trusted_Connection = False; MultipleActiveResultSets=True" ;
 
        SqlConnection myConnection = new SqlConnection(connectionString);
        myConnection.Open();
 
 
        string EngineerID=null;
 
        string commandString1 = "SELECT EngineerID FROM tblNewCategory Where Category like '" + ddlCategory.SelectedValue + "'";
 
        SqlCommand myCommand1 = new SqlCommand(commandString1, myConnection);
 
        SqlDataReader myReader1 = myCommand1.ExecuteReader();
        myReader1.Read();
 
        if (myReader1.HasRows)
        {
            EngineerID = myReader1.GetInt16(0).ToString();
 
        }
 
        myReader1.Close();

Open in new window

0
 
LVL 14

Expert Comment

by:Binuth
ID: 22612605
sorry last comment is realted to windows app ... not for web
0
 
LVL 43

Accepted Solution

by:
TimCottee earned 2000 total points
ID: 22612662
Hello dwezil,

btSubmit.Attributes.Add("onclick","if(document.getElementById('ddlCategory').value=='NONE') {window.alert('You must select a category');return false;}");

Add this to your page load and click the button, you may need to have "NONE" as the value for your default selection / or change the above line to reflect your default selection.

Regards,

TimCottee
0
 

Author Closing Comment

by:dwezil
ID: 31501888
Spot on mate cheers!
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Originally, this post was published on Monitis Blog, you can check it here . In business circles, we sometimes hear that today is the “age of the customer.” And so it is. Thanks to the enormous advances over the past few years in consumer techno…
Hello there! As a developer I have modified and refactored the unit tests which was written by fellow developers in the past. On the course, I have gone through various misconceptions and technical challenges when it comes to implementation. I would…
In this tutorial viewers will learn how to code links for mobile sites that, once clicked, send a call or text to a specified number. For a telephone link (once clicked, calls a number), begin with a normal "<a href=" link tag. For the href, specify…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question