I lost the settings in my DataGrid set during design-time?
This is possible if you assign a custom DataGridTableStyle to the DataGrid. The properties in the DataGridTableStyle will then replace certain properties in the DataGrid. Take a look at DataGrid class reference for a list of these properties.
How do I create an editable listbox with an in-place TextBox and Button?
The attached EditableList UserControl implements an editable listbox with an in-place TextBox and Button allowing users to directly edit the contents of the list box. When the user clicks on a selected item, a textbox and a button is shown over the selected item and the user can directly edit the selected item text. The button can be programmed to show for example a OpenFileDialog to allow user to select a file (useful while implementing a Files list).
How can I move rows by dragging the row header cell
One way to implement this is to derive a DataGrid and override the virtual OnMouseDown, OnMouseMove and OnMouseUp methods. In your overrides, if the mousedown is on a row header, track the initial mousedown row, and as it moves, draw a line to indicate a target position. Then on the mouseup, handle moving the row. You can download a sample (C#, VB) that illustrates how this might be done.
How can I place a TextBox in overwrite mode instead of insert mode
You can handle the textbox’s KeyPress event and if you want the keypress to be an overwrite, just select the current character so the keypress will replace it. The attached sample has a derived textbox that has an OverWrite property and a right-click menu that allows you to toggle this property. The snippet below shows you a KeyPress handler that automatically does an overwrite if the maxlength of the textbox has been hit. This does not require a derived class. private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) { if(textBox1.Text.Length == textBox1.MaxLength && textBox1.SelectedText == ””) { textBox1.SelectionLength = 1; } }
How can I use a TextBox to enter a password
Set the TextBox.PasswordChar property for the textbox. textBox1.PasswordChar = ’\u25CF’;