Question

我有Winform申请有2个表单1的名称Tree 2'名称AddRegion其中有3个控制公共修饰符我发送值从树到AddRegion控件它正常工作，但打开新的AddRegion 我如何以打开的表格发送价值

//  this is button cick in Tree 
Definitions.AddRegion addreg = new Definitions.AddRegion();
addreg .txt_accno.Text  ="1";
addreg .txt_acconame.Text  = "2";
addreg.lbl_ParentID.Text ="3";
addreg.ShowInTaskbar = false;
//  addreg.Show(this);
this.Hide();

Answer 1

试试这个方法，

for (int i = 0; i < Application.OpenForms.Count; i++)
{
    if (Application.OpenForms[i].Name == "YourFormName")
    {
        YourForm form = (YourForm)Application.OpenForms[i];
        ///Assign the value here
        ///form.txt_accno.Text = "1"; //etc.
    }
}

<强> EDITE：

即使您可以使用LINQ查找开放表单。

var forms =  (from Form form in Application.OpenForms
                            where form.Name == "Form2"
                            select form)

这个怎么样

YourForm form = (YourForm)Application.OpenForms["formName"];

Answer 2

将Definitions.AddRegion表单保留在methode之外的变量中。

因此它将是全球性的，可访问的，如：

Definitions.AddRegion addreg = new Definitions.AddRegion();

void button1_Click(object sender, EventArgs eventArgs)
{
    addreg .txt_accno.Text  ="1";
    addreg .txt_acconame.Text  = "2";
    addreg.lbl_ParentID.Text ="3";
    addreg.ShowInTaskbar = false;
    this.Hide();
}

在另一个打开的表单中发送值到文本框？

2 个答案: