Unable to call a web control in a static method

Question

1.00/5 (1 vote)

See more:

I have a list on design side

XML

<ul id="banner" runat="server" class="bxslider">

</ul>

In code behind I have a webmethod which is called using ajax. When I try to assign value in the above list using its id it gives error which says an object reference is required and when i try to assign value by making an object of the class it says Object reference not set to an instance of an object. Below is the webmethod code:

C#

[WebMethod]
    public static void bind_Banner(string day, string month)
    {
        try
        {
            
            string list = "<li><img src='images/birthday.jpg' width='310px' height='297px'/></li>";
            int width = 310, height = 297;
            
            string str = "select logo,companyname from logos where status='True' AND type='Birthdays' AND day='"+day+"' AND month='"+month+"'";
            DataSet ds = Class1.myTable(str);
            if (ds.Tables[0].Rows.Count > 0)
            {
                list = "";
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    
                    string image = ds.Tables[0].Rows[i][0].ToString().Substring(2);
                    string name = ds.Tables[0].Rows[i][1].ToString();
                    list += "<li><img src='" + image + "' width=" + width + " height=" + height + "/><p class='caption'>" + name + "</p></li>";
                }
            }
            
            _Default obj = new _Default();
            obj.banner.InnerHtml = list; //object reference not set to an instance of an object
            
        }
        catch (Exception ex)
        {

        }

How can I assign value to this list?? Any help would be greatly appreciated.
Thanks

Posted 28-Jun-13 5:17am

lucky050

Updated 28-Jun-13 8:25am

v2

Add a Solution

Comments

Asp_Learner 28-Jun-13 11:25am

Have you tried to popup onfail attribute of Aajx ,try to do that ,you will get idea where you have mistaken ,or use Google Chrome debugger ,by pressing F12 key .

Sergey Alexandrovich Kryukov 28-Jun-13 17:15pm

Of course, this is how non-static (instance) methods work. So, why would you need static?
—SA

lucky050 28-Jun-13 17:26pm

I am using a javascript function to call this web method. Below is the code of my js function:
<script type="text/javascript">
function time() {
var currentTime = new Date();
var day = currentTime.getDate();
var month = currentTime.getMonth() + 1;
PageMethods.bind_Banner(day, month);
}
</script>

Sergey Alexandrovich Kryukov 28-Jun-13 17:40pm

OK, you are not answering my question, so you cannot expect an advice, but you should know that simulation is the input is the UI abuse. It should be used only in some special cases: playing keyboard/mouse macro, software testing tools and the like.
—SA

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)