How to use LINQ to select data from combobox with where filter

Question

I am working with winform. I found this code which throwing error The type or namespace name 'ComboBoxItem' could not be found (are you missing a using directive or an assembly reference?)

var selectedperiods = cboPeriods.Items.Cast<ComboBoxItem>().Where(i => (int.Parse(i.Value.ToString())) == 1);

i am getting error for ComboBoxItem. tell me how to sort it ?. i have to use LINQ to extract data from ComboBox with where filter. thanks

Answer 1

Assuming this is for a windows forms combobox. You could try casting it to the object type in the combobox. I assume you added integers like this to the combobox.

        comboBox1.Items.Add(1);
        comboBox1.Items.Add(2);
        comboBox1.Items.Add(3);
        comboBox1.Items.Add(4);
        comboBox1.Items.Add(5);
        comboBox1.Items.Add(6);
        comboBox1.Items.Add(7);
        comboBox1.Items.Add(8);
        this.Load += Form1_Load;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        var itm = comboBox1.Items.Cast<int>().Where(i => i == 1);
    }