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Auto refresh variables and textboxes on forms

Auto refresh variables and textboxes on forms

Rui Ruivo

4y854Windows Forms

Hi everyone

My WinForm app is starting to get more complexe, i now have several forms that hide and show again.

The problem is the data only updates on load, and i dont want to make new querys every time the form changes.

Example, i have global variables ans SQL results that i populate and want to see on form automaticly witheout having to dispose/close and reopen.

I just want to refresh the variables on the fly instantaniously when they change.

Maybe like react/observables in Angular/RXJS/NGRX.

Any idea ?

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh4y ago
Accepted answer
you can use cache
private void btnGet_Click(object sender, EventArgs e)
{
    ObjectCache cache = MemoryCache.Default;
    string val= cache["key"] as List<string>();

    if (val== null)
    {
        CacheItemPolicy policy = new CacheItemPolicy();



        policy.ChangeMonitors.Add(new
        CacheEntryChangeMonitor(yrlist));

        // Fetch the list contents.
        yrlist =   //from db


        cache.Set("key", yrlist , policy);
    }

    Label1.Text = val[0];
}
Rui Ruivo4y ago
Is cache really what i need?

I want TextControls to update automaticly when Globals or Cache is updated.

any idea ?
Rui Ruivo4y ago
Its working:

Thank you very much.
Best regards.

Rui
Rui Ruivo4y ago
Got some errors: