主窗体程序:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; namespace WindowsFormsApp20
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{
Class1 cs = new Class1();
cs.test();
}
}
}
class1:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace WindowsFormsApp20
{
class Class1
{
public void test()
{ Form1 f1 = new Form1();
f1.richTextBox1.Text = "123";
}
}
}
运行结果啥也没,。。。。。。。。。
解决办法:
将窗体作为参数传入类,然后可以根据属性来对其进行相应的操作
实例修改如下:
主窗体程序:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; namespace WindowsFormsApp20
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{
Class1 cs = new Class1();
cs.test(this);
}
}
}
class1:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace WindowsFormsApp20
{
class Class1
{
public void test(Form1 obj)
{ obj.richTextBox1.Text = "123";
}
}
}
是不是很简单!!!
运行结果:别忘了将主控件的modifiers属性改为public
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