在c#中从字符串调用表单

本文关键字：调用 表单 字符串 | 更新日期: 2023-09-27 17:49:15

我在c#中有一个Windows应用程序，我需要调用窗体，其名称在运行时保存为字符串变量。

;

我已经有了表单; Login.cs 

string formToCall = "Login"
Show(formToCall)

在c#中从字符串调用表单

看看Activator.CreateInstance(String, String):

Activator.CreateInstance("Namespace.Forms", "Login");

您也可以使用Assembly类(在System.Reflection命名空间中):

Assembly.GetExecutingAssembly().CreateInstance("Login");

使用反射:

//note: this assumes all your forms are located in the namespace "MyForms" in the current assembly.
string formToCall = "Login"
var type = Type.GetType("MyForms." + formtocall);
var form = Activator.CreateInstance(type) as Form;
if (form != null)
   form.Show();

为了更动态，你可以把你的表单放在任何文件夹中:

public static void OpenForm(string FormName)
{
    var _formName = (from t in System.Reflection.Assembly.GetExecutingAssembly().GetTypes()
                     where t.Name.Equals(FormName)
                     select t.FullName).Single();
    var _form = (Form)Activator.CreateInstance(Type.GetType(_formName));
    if (_form != null) 
    _form.Show();
}

试试这个:

var form = System.Reflection.Assembly.GetExecutingAssembly().CreateInstance(formToCall);
form.Show();

(Form)Assembly.GetExecutingAssembly().CreateInstance()

    Form frm = (Form)Assembly.GetExecutingAssembly().CreateInstance("namespace.form");
    frm.Show();
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