Get all values from CheckBoxList in C#

November 04, 2010 C# LINQ Snippet

This is a class that add an extension to the CheckBoxList class to return a comma separated string with all the selected values.

You call this function by the following:

string mySelectedValues = myCheckBoxList.GetSelectedValues();

The class to place somewhere in you project (remember to add a using-reference to any class you want to call this function from:

public static class CheckBoxListExtension {
    public static string GetSelectedValues(this CheckBoxList checkBoxList) {
        string retval = string.Empty;

        try {
            foreach (ListItem item in checkBoxList.Items) {
                if (item.Selected) {
                    retval += item.Value + ',';
                }
            }
            retval.TrimEnd(',');
        }
        catch (Exception) {
        }

        return retval;
    }
}

Or the same code if LINQ is your poison:

public static class CheckBoxListExtension {
    public static string GetSelectedValues(this CheckBoxList checkBoxList) {
        string retval = string.Empty;

        try {
            retval = checkBoxList.Items.Cast<ListItem>().Where(item => item.Selected).Aggregate(retval, (current, item) => current + (item.Value + ','));
            retval.TrimEnd(',');
        }
        catch (Exception) {
        }

        return retval;
    }
}

Get all values from CheckBoxList in C#

Related posts:

Comments