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Foreach loop, tasks and DataGridViewRows within a DataGridView in C#


Foreach loop, tasks and DataGridViewRows within a DataGridView in C#

By : XBagon
Date : November 21 2020, 09:01 AM
I think the issue was by ths following , You probably is asking about:
Task.WaitAll(tasks); after the end of the loop
code :
foreach (DataGridViewRow row in tblProduct.Rows)
{
    ...
    tasks.Add(newTask);
    ..   
}
Task.WaitAll(tasks);


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Foreach loop and tasks

Foreach loop and tasks


By : user2022961
Date : March 29 2020, 07:55 AM
Any of those help I know from the codeing guidlines that I have read you should not do , It's absolutely the same problem with foreach. The following:
code :
foreach (MyClass myClass in myClassList) 
{ 
    Task.Factory.StartNew(() => myClass.DoAction());
}
foreach (MyClass myClass in myClassList) 
{ 
    MyClass localMyClass = myClass;
    Task.Factory.StartNew(() => localMyClass.DoAction());
}
for (int i = 0; i < 5; i++)
{
    Task.Factory.StartNew(localI => Console.WriteLine(localI), i);
}
How to convert Foreach loop to Linq (in datagridview)

How to convert Foreach loop to Linq (in datagridview)


By : Deep Graphics
Date : March 29 2020, 07:55 AM
I wish this helpful for you Linq doesn't seem to have a good "each" aggregate. There is Aggregate(), which I don't like if I'm not actually accumulating anything, since the accumulator value is essentially thrown away. I don't think there's anything equivalent to List.ForEach(), and it's a shame. If you're using C# 4.0, and don't mind processing in parallel, you could use .AsParallel().ForAll(). So anyway, here's a few ways to do what you want:
Using List.ForEach():
code :
SuburbGridView.Rows.Cast<GridViewRow>().Where(
    r => ((CheckBox)r.FindControl("SuburbSelector")).Checked).ToList().ForEach(row =>
{
    Response.Write(row.ID);
    // Do something
});
SuburbGridView.Rows.Cast<GridViewRow>().Where(
    r => ((CheckBox)r.FindControl("SuburbSelector")).Checked).AsParallel().ForAll(row =>
{
    Response.Write(row.ID);
    // Do something
});
// Doesn't work
(CheckBox)row.FindControl("someCheckbox").Checked
// Works
((CheckBox)row.FindControl("someCheckbox")).Checked
Size DataGridviewRows to fill DataGridView

Size DataGridviewRows to fill DataGridView


By : Dmitriy Kachan
Date : November 22 2020, 11:05 AM
This might help you How can I adjust the columns horizontally so that the data fills the entire DataGridView and leaves no blank spaces to the left or right of the data? , try this :
code :
dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill
DataGridView in foreach loop

DataGridView in foreach loop


By : Guillermo Gómez
Date : March 29 2020, 07:55 AM
hope this fix your issue I want to simplify this code: , You should loop over the Columns collection of your DataGridView
code :
foreach (DataGridViewColumn column in dataGridView1.Columns)
     column.Width = 300;
foreach (DataGridViewColumn column in dataGridView1.Columns
                                                   .Cast<DataGridViewColumn>()
                                                   .Take(2))
     column.Width = 300;
foreach(DataGridView dgv in this.Controls.OfType<DataGridView>())
     foreach (DataGridViewColumn column in dgv.Columns)
         column.Width = 300;
C# ForEach Loop With ASync Tasks & Dependent Post ASync Tasks

C# ForEach Loop With ASync Tasks & Dependent Post ASync Tasks


By : Regi Kusumaatmadja
Date : March 29 2020, 07:55 AM
may help you . I may be misinterpreting, but why not move your "iteration" into it's own function and then use Task.WhenAll to wait for all iterations in parallel.
code :
public async Task MyAsyncWrapper()
{
  var allTasks = Requests.Select(ProcessRequest);

  await Task.WhenAll(allTasks);
}

private async Task ProcessRequest(Request request)
{
    KeyValuePair<bool, string> Result = await this.ExecuteAsync(request);

    if (Result.Key == true)
    {
      await this.DoSomethingElseAsync(request.Id, request.Name, Result.Value);
      Console.WriteLine("COMPLETED");
    }
}
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