Drodpownlist1 is not in intellisense list

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i try to call dropdownlist1 but this is not available in list

i try to do something this like this

function is in static

C#

[WebMethod]
       public static string Jqufunc(int yearP,int )
       {

What I have tried:

C#

if ((Dropdownlist1.selectvalue) != 0)
                {
                    con = con.Where(c => c.CustName.Contains(Dropdownlist1.selectvalue) || c.InvoiceID == Dropdownlist1.selectvalue);
                }

but Dropdownlist1 is not in list
<asp:DropDownList ID="DropDownList1" runat="server"
onselectedindexchanged="DropDownList1_SelectedIndexChanged">

Posted 17-May-16 20:15pm

super_user

Updated 17-May-16 21:16pm

v3

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Raje_ 18-May-16 2:57am

You have done typo mistake. See your ID is "DropDownList1" and your codebehind code is "Dropdownlist1". Focus on d.

2 solutions

Solution 2

Check this

c# - How to acess page controls inside a static method in ASP.net - Stack Overflow[^]
Accessing controls from Static method[^]

Posted 17-May-16 21:16pm

Karthik_Mahalingam

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OriginalGriff · Accepted Answer · 2016-05-17T21:10:00

Static methods cannot access non-static class information, which means that any controls which are part of the form are unavailable within your method.
Static methods do not have a this which refers to the current instance of the class - that's what static means, it isn't dependant on any particular instance but general to the whole class - and so can't access anything which does.

If you like, it's like a car: an instance of a car has a colour: because you can't say "what colour is a car?" but you have to specify which car "what colour is this car?", "what colour is that car?", "what colour is my car?" and so forth. "Colour" is an instance property of a car.
But all cars have four wheels, so you can say "how many wheels has a car?" without having to specify a particular instance. "WheelCount" is a static property of a car.

In your case, you could make the method non-static, or pass the control to it from the instance. You can't access any control directly.