What do you do when you get fed up having to write the same code over and over again? Write a base class for it… of course.<\/p>\n
I regularly use the WinForms ListView control and often want to specify a specific column (in detail view) that must auto resize when the whole control resize. Therefore I created the following class that does all that (and more stuff) to make life easier.<\/p>\n
\r\npublic class ListViewEx : ListView\r\n {\r\n public ListViewEx()\r\n : base()\r\n {\r\n DoubleBuffered = true;\r\n View = View.Details;\r\n resizeTimer.Tick += resizeTimer_Tick;\r\n }\r\n\r\n [Description("Use one column to auto resize in detail view")]\r\n public bool AutoResizeColumnEnabled { get; set; }\r\n [Description("Column index of auto resize column")]\r\n public int AutoResizeColumnIndex { get; set; }\r\n public event MethodInvoker EnterKeyPressed;\r\n public event MethodInvoker DeleteKeyPressed;\r\n protected override void OnKeyPress(KeyPressEventArgs e)\r\n {\r\n if (e.KeyChar == '\\r')\r\n if (EnterKeyPressed != null)\r\n {\r\n EnterKeyPressed();\r\n e.Handled = true;\r\n }\r\n base.OnKeyPress(e);\r\n }\r\n protected override void OnKeyDown(KeyEventArgs e)\r\n {\r\n if (e.KeyCode == Keys.Delete)\r\n if (DeleteKeyPressed != null)\r\n {\r\n DeleteKeyPressed();\r\n e.Handled = true;\r\n }\r\n base.OnKeyDown(e);\r\n }\r\n private Timer resizeTimer = new Timer() { Interval = 100, Enabled = false };\r\n private void resizeTimer_Tick(object sender, EventArgs e)\r\n {\r\n resizeTimer.Enabled = false;\r\n try\r\n {\r\n if (AutoResizeColumnEnabled && View == System.Windows.Forms.View.Details &&\r\n AutoResizeColumnIndex > -1 && this.Columns.Count > AutoResizeColumnIndex)\r\n {\r\n int columnsWidth = 0;\r\n Application.DoEvents();\r\n for (int i = 0; i < this.Columns.Count; i++)\r\n {\r\n if (i != AutoResizeColumnIndex)\r\n columnsWidth += this.Columns[i].Width;\r\n }\r\n this.Columns[AutoResizeColumnIndex].Width = this.ClientSize.Width - columnsWidth - 2;\r\n }\r\n }\r\n catch { }\r\n }\r\n protected override void OnResize(EventArgs e)\r\n {\r\n resizeTimer.Enabled = false;\r\n resizeTimer.Enabled = true;\r\n base.OnResize(e);\r\n }\r\n }\r\n<\/pre>\nNow all you have to do is set the AutoResizeColumnEnabled property to true and specify a column index for AutoResizeColumnIndex and there you go. Easy hey?<\/p>\n","protected":false},"excerpt":{"rendered":"
What do you do when you get fed up having to write the same code over and over again? Write a base class for it… of course. I regularly use the WinForms ListView control and often want to specify a …<\/p>\n