CODEWITHSUNDEEP
c#winformscombobox
James Morrish
James Morrish

Reputation: 475

Remove all instances of specific item from a combobox in C#

I am populating a ComboBox with a list of all the running processes on a system. However, I want to be able to remove all the system processes and general noise from the list.

This is the code I am trying to use: 

try
{
    var allProc = Process.GetProcesses();

    foreach (var p in allProc)
        comboBox1.Items.Add(p.ProcessName);

    comboBox1.Sorted = true;
    comboBox1.Items.Remove("svchost");
}

However I think all it is doing is removing a single instance of the svchost from the list, when in reality there are many.

How would I remove all of a specific item from the ComboBox?

Upvotes: 1

Views: 315

Answers (2)

Ofir Winegarten
Ofir Winegarten

Reputation: 9365

First, I don't see why you add those processes name to the combobox, if the next line you remove them. Isn't it simpler to just not add them?

 var allProc = Process.GetProcesses().Where(p=>p.ProcessName != "svchost");
 foreach (var p in allProc) comboBox1.Items.Add(p.ProcessName);

Second, if you do want to remove item after you've added them, find all the items and remove them with a loop:

foreach (string item in cb.Items.Cast<string>().Where(name => name == "svchost"))
{
    cb.Items.Remove(item);
}

Upvotes: 2

Mohamed Kandeel
Mohamed Kandeel

Reputation: 157

try this

for (int i = 0; i < comboBox1.Items.Count; i++)
{
    string st = comboBox1.Items[i].ToString();
    if (st == "svchost")
    {               
        comboBox1.Items.RemoveAt(i);
        i--;                    
    }
}

Upvotes: 1

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