C#

Rectangle rect = new Rectangle(0,0,0,0);
OnMouseDown(...)
{
  this.dragging = true;
  rect.X = e.X;
  rect.Y = e.Y;
}

OnMouseUp(...)
{
  this.dragging = false;
}

OnMouseMove(...)
{
  if(this.dragging)
  {
    int width = e.X - this.rect.X;
    int height = e.Y - this.rect.Y;
    rect.Width = width;
    rect.Height = height;
    this.Invalidate();
  }
}

OnPaint(...)
{
  e.Graphics.DrawRectangle(myPen, rect);
}

str = str.Length > 250 ? str.Substring(0,250) : str;

str = str.Substring(0, Math.Min(str.Length, 250));

Perspx wrote:

str = str.Length > 250 ? str.Substring(0,250) : str.Substring(0,str.Length);

public const int WM_NCLBUTTONDOWN = 0xA1; 
public const int HTCAPTION = 0x2;
 
[DllImport("User32.dll")]
public static extern bool ReleaseCapture(); 
[DllImport("User32.dll")] 
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam); 

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) // let anything on MouseDown handle with this
{ 
     if (e.Button == MouseButtons.Left) 
     { 
          ReleaseCapture(); 
          SendMessage(Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0); 
     }
}  

private void panelTab_Click(object sender, EventArgs e)
{
   // My code here
}

Dictionary<string, string> strings = new Dictionary<string, string>();
strings[s] = s;
strings[x] = x;
strings[v] = v;
strings[z] = z;
strings[a] = a;

if (select count('stringvalue') from tablename where stringvaluecolumn='stringvalue')=0<br />
begin<br />
insert into tablename values('stringvalue')<br />
end<br />

Environment.GetEnvironmentVariable("temp");