Hi all...

I'm using ASP.NET web service and windows application.

All I want is how to passing ArrayList to web service?

when I calling web method and passing string or int, it works fine. but when I passing ArrayList, it doesn't work and I don't know what is the problem.

for example in windows application :

 myMethod.addNew(stringValue, intValue, listValue) // where listValue is ArrayList...

it give me error with listValue... but if I called another function in the same windows application and passing ArrayList, it works fine.

the problem only when I passing ArrayList to web service...

How can I passing ArrayList to web service? pls I need help...

thanks for reading my quistion and I respect for any reply...

you can't pass arraylist. you have to use object arrays.take an object array, pass all those arraylist values into objectlist. then pass that list.

 object[] oa = new object[al.length];

 for(int vLoop=0; vLoop<al.length; vLoop++)

{

   oa[vLoop]  = al[vLoop];

}

then pass this oa to webservice.

It's because of the interopability you can't pass ArrayLists via your webmethod, you have to convert you ArrayList to an other type e.g. a object array. For converting look at the ToArray method.

More info at a similar thread: http://forums.asp.net/t/1210915.aspx

Thank you all....

I preciated...

I also solved this problem by converting the ArrayList to string and send it to webserver as string.

But I believe that the sending by object is better than string.

Thank you so much for helping me...

Your welcome its great to help people :-)

ramireddyindia:

you can't pass arraylist. you have to use object arrays.take an object array, pass all those arraylist values into objectlist. then pass that list.

 object[] oa = new object[al.length];

 for(int vLoop=0; vLoop<al.length; vLoop++)

{

   oa[vLoop]  = al[vLoop];

}

then pass this oa to webservice.

Hi, I was trying to do your steps.

Dim sc As New ArrayList //dim array list
Dim ArrObj() As Object //create object
ArrObj = sc.ToArray //convert to object AND PASS THIS TO WEB SERVICE.

at the web service method im passing in string as a input parameter.

Public Function DeleteRecord(ByVal EventDetailsID As string) As Integer

didnt work at all.. please kindly help.

thanks

Unless you're still stuck on .NET 1.1, you should not use the ArrayList class at all. Use one of the strongly-typed generic collections instead.