CODEWITHSUNDEEP
c#web-services
emnt
emnt

Reputation: 25

Cannot implicitly convert type 'void' to 'string' webservice

I'm new at C# and i can't understand why i'm getting this error. Here is my code:

    public partial class Window : System.Windows.Forms.Form
    {

    WebServ.ItemDimWs con = new WebServ.ItemDimWs();

    decimal length, width, height, weight, rescode;
    string user, article, res;

    public Window()
    {
        InitializeComponent();
    }

    private void Window_Load(object sender, EventArgs e)
    {

    }


    public void btn_send_Click(object sender, EventArgs e)
    {
        length = Convert.ToDecimal(tb_lenght.Text.ToString());
        width = Convert.ToDecimal(tb_width.Text.ToString());
        height = Convert.ToDecimal(tb_height.Text.ToString());
        weight = Convert.ToDecimal(tb_weight.Text.ToString());
        article = tb_article.Text;
        user = tb_user.Text;

        string result = con.setItemDims(article, length, width, height, weight, weight, "EA", "KG", "CM", user, ref rescode, ref res);
        MessageBox.Show(result);
        MessageBox.Show("Resp:" + rescode + res + "!!!");
    }
}

I need to send some info to the webservice and receive the answer.

Upvotes: 1

Views: 1310

Answers (3)

kirtan
kirtan

Reputation: 61

Since the webservice method is not returning anything it cannot be called like this.

string result = con.setItemDims(article, length, width, height, weight, weight, "EA", "KG", "CM", user, ref rescode, ref res);

If you want the result to be output you can write service in such a way that result will be out parameter. (If you have access over the web service code.)

Upvotes: 0

Adam Brown
Adam Brown

Reputation: 1729

WebServ.ItemDimWs.setItemDims does not return anything, so you can't assign the output to a string.

So instead of doing this

string result = con.setItemDims(article, length, 
        width, height, weight, weight, "EA", "KG", "CM", 
        user, ref rescode, ref res);

You can go with

con.setItemDims(article, length, 
        width, height, weight, weight, "EA", "KG", "CM", 
        user, ref rescode, ref res);

Upvotes: 2

RVid
RVid

Reputation: 1297

You are assigning a return value of a method setItemDims to a string variable but the method is void (no return value)

Note: Not sure what are all the parameters of setItemDims bu I can see you are passing ref res, this might be a result being set. Again, Just guessing from the naming convention?

Upvotes: 0

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