C# ListView Column Width Auto

Question

How can I set the column width of a c# winforms listview control to auto. Something like width = -1 / -2 ?

Answer 1

You can use something like this, passing the ListView you want in param

    private void AutoSizeColumnList(ListView listView)
    {
        //Prevents flickering
        listView.BeginUpdate();

        Dictionary columnSize = new Dictionary();

        //Auto size using header
        listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize);

        //Grab column size based on header
        foreach(ColumnHeader colHeader in listView.Columns )
            columnSize.Add(colHeader.Index, colHeader.Width);

        //Auto size using data
        listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);

        //Grab comumn size based on data and set max width
        foreach (ColumnHeader colHeader in listView.Columns)
        {
            int nColWidth;
            if (columnSize.TryGetValue(colHeader.Index, out nColWidth))
                colHeader.Width = Math.Max(nColWidth, colHeader.Width);
            else
                //Default to 50
                colHeader.Width = Math.Max(50, colHeader.Width);
        }

        listView.EndUpdate();
    }