CODEWITHSUNDEEP
c#multithreadingwinformsdatagridview
dynamicuser
dynamicuser

Reputation: 1552

databind datagridview in multithreadded application

Im trying to databind my data grid view from a timer using multi threading. THe timer is there as we need it to show live data.

The code im using is - 

private void Form1_Load(object sender, EventArgs e)
    {
        dt = JobManager.GetTodaysJobs();
        trd = new Thread(StartTimer);
        trd.Start();
    }

    void StartTimer()
    {
        timer1.Start();
        LoadData();
    }

    void LoadData()
    {
        dt = JobManager.GetTodaysJobs();
        dataGridView1.AutoGenerateColumns = false;
        dataGridView1.DataSource = dt;
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        LoadData();
    }

However, I get the following error -

Cross-thread operation not valid: Control 'dataGridView1' accessed from a thread other than the thread it was created on.

Any ideas how I can get around this?

Cheers

Upvotes: 3

Views: 3222

Answers (1)

No Idea For Name
No Idea For Name

Reputation: 11577

You cannot update UI elements from A thread that is not the creator of these objects.

change your method like this:

void LoadData()
{
    if (InvokeRequired)
                Invoke(new MethodInvoker(InnerLoadData));
}

void InnerLoadData()
{
    dt = JobManager.GetTodaysJobs();
    dataGridView1.AutoGenerateColumns = false;
    dataGridView1.DataSource = dt;
}

Upvotes: 6

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