Get List Of All Printers

To Getting List of All Printers First of all add a namespace System.Drawing.Printing use Foreach Loop: foreach(string printer in PrinterSettings.InstalledPrinters) { Combobox1.Items.Add(Printer.ToString()); } using this you get list of all printer install on your system

Select Second Maximum From a Table in Sql

Q.Find Second Maximum From a Table in Sql

select max(duration) from course where duration<(select max(duration) from course) OR select min(duration) from course where duration in(select top 2 duration from course)

EditTable Listbox

To create a edittable list box take a list box and enter items in it.now select the list box double click event from event list. private void listBox1_DoubleClick(object sender, EventArgs e) { //get list item index int itemno = this.listBox1.SelectedIndex; //get list item tex; string itemvalue = this.listBox1.Items[itemno].ToString(); Rectangle rect = this.listBox1.GetItemRectangle(itemno); this.textBox1.BackColor = Color.Aqua; this.textBox1.BorderStyle = BorderStyle.Fixed3D; //get list item drawing point this.textBox1.Location = new System.Drawing.Point(rect.X + 12, rect.Y + 12); this.textBox1.Size = new System.Drawing.Size(rect.Width + 5, rect.Height - 5); this.textBox1.Visible = true; this.textBox1.Text = itemvalue; this.textBox1.Focus(); this.textBox1.SelectAll(); } private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { //if User Press Enter button if (e.KeyChar == 13) { this.listBox1.Items[this.listBox1.SelectedIndex] = this.textBox1.Text; this.textBox1.Visible = false; } //If User press Escape button if (e.KeyChar == 27) { this.textBox1.Visible = false; } }