#region progressBar实时显示进度
        private void button1_Click(object sender, EventArgs e)
        {
            int i = 10000;
            progressBar1.Minimum = 0;
            progressBar1.Maximum = i;
            for (int k = 0; k < i; k++)
            {
                progressBar1.Value += 1;
                Application.DoEvents();  //label1实时显示,而非处理完成后再显示
                label1.Text = progressBar1.Value.ToString() ;
            }
        }
        #endregion

        #region 打开文件选择对话框
        private void menuFileLoad_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.Title = "Open Photo";
            dlg.Filter = "jpg files(*.jpg)|*.jpg|All files(*.*)|*.*";
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    pbxPhoto.Image = new Bitmap(dlg.OpenFile());
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }

            }
            dlg.Dispose();
        }
        #endregion

        #region 菜单选中或可选
        private void menuImage_DropDownOpening(object sender, EventArgs e)
        {
            ProcessImageOpening(sender as ToolStripDropDownItem);
        }

        private void ProcessImageOpening(ToolStripDropDownItem parent)
        {
            if (parent != null)
            {
                string enumval = pbxPhoto.SizeMode.ToString();
                foreach (ToolStripMenuItem item in parent.DropDownItems)
                {
                    item.Enabled = (pbxPhoto.Image != null);
                    item.Checked = item.Tag.Equals(enumval);
                }
            }
        }
        #endregion

Winform常用的一些功能收集（持续更新）,布布扣,bubuko.com

Winform常用的一些功能收集（持续更新）