Question

我知道这个问题已被问过几次，但没有一个解决方案适合我。我只是想将一个值从一个表单传递给另一个表单的文本框在第一个表单上，双击时我有一个数据网格从datagrid列获取一个值。

public partial class AvailableRooms : Form
{   
   private void DCRoom(object sender, DataGridViewCellMouseEventArgs e) 
  {
   var roomnum = dgRooms.Rows[e.RowIndex].Cells["iRoomNum"].Value.ToString();
   RoomBooking rb = new RoomBooking();//The second form
   rb.roomnumber = roomnum;           
   rb.Show();        
 }
}

在第二个表单上，我设置了文本框的属性

public partial class RoomBooking : Form
{

   public RoomBooking()
    {
      StartPosition = FormStartPosition.CenterScreen;
      InitializeComponent();
  }

  public string roomnumber
   {
      get { return txtRoomNum.Text; }
      set {txtRoomNum.Text = value;}
    }

 }

先谢谢你的帮助？

Answer 1

您必须找到要编辑它的控件，因为它不属于该类。

private void DCRoom(object sender, DataGridViewCellMouseEventArgs e)
{
    //new value
    var roomnum = dgRooms.Rows[e.RowIndex].Cells["iRoomNum"].Value.ToString();
    //The second form
    RoomBooking rb = new RoomBooking(this);
    //The textbox
    TextBox roomnumber = (TextBox)rb.Controls.Find("roomnumber", true)[0];
    //set the value of the textbox
    roomnumber.Text = roomnum;
    //show second form
    rb.Show();
}

Answer 2

我会像这样定义RoomBooking类：

public partial class RoomBooking : Form
{
    public RoomBooking() // WinForms Designer requires a public parameterless constructor
    {
        InitializeComponent();
        StartPosition = FormStartPosition.CenterScreen;
    }

    public RoomBooking(string roomNumber) : this() // Constructor chaining
    {
        RoomNumber = roomNumber;
        txtRoomNum.Text = RoomNumber;
    }

    public string RoomNumber { get; set; }
}

然后：

public partial class AvailableRooms : Form
{      
    private void DCRoom(object sender, DataGridViewCellMouseEventArgs e)
    {
        var roomNumber = dgRooms.Rows[e.RowIndex].Cells["iRoomNum"].Value.ToString();
        var roomBooking = new RoomBooking(roomNumber);
        roomBooking.Show();
    }
}

希望这有帮助。

将值从一个表单传递到另一个表单的文本框

2 个答案: