CODEWITHSUNDEEP
c#.netwinformsdatagridview
byCoder
byCoder

Reputation: 9184

add data to gridView on form from another class

How can i append data to my dataGridView on form, from another class?

here is class:

class TermSh
    {

        public HttpWebRequest request_get_page_with_captcha;
        public HttpWebResponse response_get_page_with_captcha;
        public string url;
        public Form1 form1;
        public BindingSource bindingSource1 = new BindingSource();
        public int id = 0;



        public TermSh(Form1 form1)
        {
            this.form1 = form1;
            form1.dataGridView1.DataSource = bindingSource1;
        }

        public void somemethod()
        {
            try
            {                

                cookies += response_get_page_with_captcha.Headers["Set-Cookie"];


                bindingSource1.Add(new Log(id++, DateTime.Now, cookies));
                form1.dataGridView1.Update();
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
            }
        }

and form class:

TermSh term_sh = new TermSh(this);
term_sh.somemethod();

what i do wrong? why my datagridview is empty after code executing, but with debug i see, that bindingSource1 is not empty. how to add data?

Upvotes: 0

Views: 1114

Answers (1)

mostafa8026
mostafa8026

Reputation: 313

I think , the way you are going to achieve your goal is incorrect. first of all, I think passing Form class to a class is very very bad. and then you can simply manipulate a list and return the value and using this value (list) in your Form.

I think it's better to do like this: [EDIT 1] this following class, is your ptimary class that has a method and this method return a new Log, and you can add this return value to the datagridview in the Form1.

class TermSh
{

    public HttpWebRequest request_get_page_with_captcha;
    public HttpWebResponse response_get_page_with_captcha;
    public string url;
    public int id = 0;

    public List<Log> somemethod()
    {
        try
        {                

            cookies += response_get_page_with_captcha.Headers["Set-Cookie"];

            return new Log(id++, DateTime.Now, cookies); //use this return value in your Form and update datagridview 
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message);
        }
    }
}

[EDIT 2] after that: you must prepare Log Class to be used as a collection in bindingSource (Form1.bindingSource) and update gridView. and the Following code show the Log class:

class Log
{
    private int id;
    private DateTime datetime;
    private string log_text;

    public Log(int id, DateTime datetime, string log_text)
    {
        this.id = id;
        this.datetime = datetime;
        this.log_text = log_text;
    }

    #region properties
    public int ID { get { return id; } set { id = value; } }
    public DateTime DATE_TIME { get { return datetime; } set { datetime = value; } }
    public string LOG_TEXT { get { return log_text; } set { log_text = value; } }
    #endregion
}

[Edit 3] and this code in the Form1, use the return value of class TermSh, and populate the dataGridView:

TermSh term_sh = new TermSh(city, type, null, null);
logList.Add(term_sh.getPageWithCaptchaConnection());

logBindingSource.DataSource = logList;
logBindingSource.ResetBindings(false);

[EDIT 4] so if you have a question that : "how use this class as a collection in bindingSource??". It's simple, you can populate a dataGridView with objects: this article is helpful.

Upvotes: 2

Related Questions