C# 、子窗体调用父窗体属性、方法

1 1 namespace Test
2 2 {
3 3     public partial class FrmMain : Form
4 4     {
5 5         public FrmMain()
6 6         {
7 7              InitializeComponent();
8 8         }
9 9         public DataTable DT;
1010         private void button1_Click(object sender, EventArgs e) 
1111         { 
1212             FrmChild fm = new FrmOptime(this); 
1313             fm.Show(); 
1414          } 
1515         public void BindData(){}
1616      }
1717 }

主窗体

1 1 namespace Test
2 2 {
3 3     public partial class FrmChild : Form
4 4     {
5 5         public FrmChild ()
6 6         {
7 7             InitializeComponent();
8 8         }
9 9         FrmMain frmMain;
1010         public FrmChild (FrmMain fm)
1111         {
1212             InitializeComponent();
1313             frmMain = fm;
1414         }
1515     private void button1_Click(object sender, EventArgs e) 
1616     { 
1717         frmMain.RemnantDT;
1818         frmMain.BindData();
1919     }
2020    }
2121 }

子窗体