Refresh btn

[Hamid va]

Hi , sorry for my bad english.

I have use multiple gird in my main form (Entity framework , databindingsource) .
i have refresh button on main form and i want refresh all grid data .(data changed on other form)


what is a best solution ?


 

[Emanuel Varga]

Hello,

The easiest and cleanest way to do this is to create an event on the main form and register all other forms to that event, and just connect that event to the refresh button.

Or an even easier solution (but not that clean) create a static event on the main form and register to that from all other forms, that way you won't need an instance of the main form.

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

Telerik WinForms MVP

[Hamid va]

thanks for your reply . 
can you show me with some couple of code .

 

[Emanuel Varga]

Hello again,

The easiest way i could think of is this, creating a static class, with an event and a call refresh or perform refresh method.

Please take a look at the following example:

public static class GridRefresher
{
    public static event EventHandler RefreshGridsCalled;

    public static void PerformGridRefresh()
    {
        if (RefreshGridsCalled != null)
        {
            RefreshGridsCalled(null, EventArgs.Empty);
        }
    }

}

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        GridRefresher.RefreshGridsCalled += new EventHandler(GridRefresher_RefreshGridsCalled);
    }

    void button_Click(object sender, EventArgs e)
    {
        GridRefresher.PerformGridRefresh();
    }

    void GridRefresher_RefreshGridsCalled(object sender, EventArgs e)
    {
            // get data from db and refresh Grid
    }
}

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

Telerik WinForms MVP