C#

public enum WMessages : int
        {
            WM_MOUSEMOVE=                    0x0200,

            WM_LBUTTONDOWN = 0x201,
            WM_LBUTTONUP = 0x202,
            WM_RBUTTONDOWN = 0x0204,
            WM_RBUTTONUP = 0x0205,

            WM_KEYDOWN = 0x100,
            WM_KEYUP = 0x101,

            WH_KEYBOARD_LL = 13,
            WH_MOUSE_LL = 14,
        }
[DllImport("User32.Dll", EntryPoint = "PostMessageA")]
        static extern bool PostMessage(IntPtr hWnd, uint msg, int wParam, int lParam);
        private int MAKELPARAM(int p, int p_2)
        {
            return (p_2 * 0x10000 + p);
        }
        public void SendClick(WMessages type, Point pos, IntPtr hwnd)
        {
            switch (type)
            {
                case WMessages.WM_LBUTTONDOWN:
                    PostMessage(hwnd,
                        (int)0x201, 1,
                        MAKELPARAM(pos.X, pos.Y));//(IntPtr)((pos.Y << 16) | (pos.X & 0xFFFF)));
                    return;
                case WMessages.WM_LBUTTONUP:
                    PostMessage(hwnd,
                        (int)WMessages.WM_LBUTTONUP, 0, // <--(2) but you are telling to do WM_LBUTTONDOWN
                        MAKELPARAM(pos.X, pos.Y));//(IntPtr)((pos.Y << 16) | (pos.X & 0xFFFF)));
                    return;
                default:
                    return;
            }
        }

IntPtr atat = (IntPtr)0x00010870;
SendRClick(WMessages.WM_RBUTTONDOWN, new Point(50, 50), atat);
SendRClick(WMessages.WM_RBUTTONUP, new Point(50, 50), atat);

private void textBoxEmpno_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
            if (textBoxEmpno.Text != "")
            {
                bool isDataFound = false;

                try
                {

                    string baseFolder = "URL SharePoint";
                    string[] employeeFolders = Directory.GetDirectories(baseFolder);


                    //search image
                    string imgName = textBoxEmpno.Text + ".jpg";

                    //Bool to see if file is found after checking all
                    bool fileFound = false;

                    foreach (var folderName in employeeFolders)
                    {
                        var path = Path.Combine(folderName, imgName);
                        if (File.Exists(path))
                        {
                            pictureBox1.Visible = true;
                            pictureBox1.Image = Image.FromFile(path);
                            fileFound = true;
                            //If you want to stop looking, break; here 
                        }
                    }
                    if (!fileFound)
                    {
                        //Display message that No such image found
                        pictureBox1.Visible = true;
                        pictureBox1.Image = Image.FromFile(@"C:\Users\hamizah\Desktop\images\photo\No-image-found.jpg");
                    }

                    pictureBox1.Visible = false;

                }

                finally

private void SaveButton_Click(object sender, EventArgs e)
       {
           //Validate the textbox to make sure no null or blank value can be entered
           if (contact_typeTextBox.Text == "" && contact_typeTextBox.Text == "")
           {
               errorProvider1.SetError(contact_typeTextBox, "Field must have valid text.");
           }
           else
           {
               //THE ERROR PROVIDER WILL BE CLEARED.
               errorProvider1.SetError(contact_typeTextBox, "");

               da.InsertCommand = new SqlCommand("IF NOT EXISTS(SELECT * FROM Contact_Types WHERE contact_type=@contacttype) INSERT INTO Contact_Types (contact_type) VALUES(@contacttype)", cs); //Check if the input string alread exists, if not insert it
               da.InsertCommand.Parameters.Add("@contacttype", SqlDbType.NVarChar).Value = contact_typeTextBox.Text; //Insert parameters

               cs.Open(); //Open the database connection
               MessageBox.Show("Record Successfully Saved"); //Display message box
               cs.Close(); //Close the database connection

               foreach (var conrol in Controls)
               {
                   var textbox = conrol as TextBox;
                   if (textbox != null)
                       textbox.Clear();
               }
           }
       }

dtjr.DefaultView.RowFilter = " Journal_Name Like '" + cbo_jrnl.Text.Trim() + "*'";