C#窗体传值小总

1  通过委托事件 传值

说明：  窗体2的值传值给窗体1

窗体1 代码

  private void button1_Click(object sender, EventArgs e)   //委托 事件传值      

    {       

       searchFrm sf = new searchFrm();        

      sf.SearchEvent += new test1.searchFrm.SearchDelegate(sf_SearchEvent);      

       sf.ShowDialog();         

      }

  private void sf_SearchEvent(string r1,string r2)
        {
            string s = r1;
            string q = r2;
            //this.dgv.DataSource = getDT(sql);
            textBox1.Text = r1;
            textBox2.Text = r2;
        }

窗体2 代码

        public string m_dRetrieveData = DateTime.Now.ToString("yyyy-MM-dd 00:00:00");
        public string m_dRetrieveDataEnd = DateTime.Now.ToString("yyyy-MM-dd 23:59:59");
        public delegate void SearchDelegate(string str,string str1);
        public event SearchDelegate SearchEvent;

     

private void button1_Click(object sender, EventArgs e)       

  {          

     DateTime t1 = DateTime.Parse("00:00:00");            

      DateTime t2 = DateTime.Parse("23:59:59");        

      m_dRetrieveData = dateTimePicker_end1.Value.ToString("yyyy-MM-dd") + t1.ToString(" HH:mm:ss");           

     m_dRetrieveDataEnd = dateTimePicker_end1.Value.ToString("yyy-MM-dd") + t2.ToString(" HH:mm:ss");           

      SearchEvent(m_dRetrieveData, m_dRetrieveDataEnd);      

      this.Close();

    }

 2 通过属性传值

说明 ：窗体1 的值传给窗体2

窗体1 代码

private void button1_Click(object sender, EventArgs e) // 通过属性传值
        {
            Form2 f = new Form2();
            f.SeekvideoFormValue = textBox1.Text;
            f.ShowDialog();
        }

窗体2 代码

public string SeekvideoFormValue      

   {

            get            

          {

                return this.textBox1.Text;

            }

            set         

          {

                this.textBox1.Text = value;        

          }

    }

3  要求效果显示关闭窗体1然后传值窗体2

窗体1 代码

private void button1_Click(object sender, EventArgs e)  // 项目中要求显示效果关闭窗体1 然后传值到窗体2      

   {            

     Form2 F2 = new Form2();      

       F2.S1 = textBox1.Text;            

        #region 方法1            

         this.Close();

     new System.Threading.Thread((System.Threading.ThreadStart)delegate         

    {                              Application.Run(F2);

            }).Start();            

     #endregion            

     #region 方法2            

     //this.Hide();           

      //F2.ShowDialog();      

       #endregion

        }

 窗体2 代码

    public string S1
        {
            get { return textBox1.Text; }
            set { textBox1.Text = value; }
        }