C# Can';t从字段初始值设定项引用非静态对象
我写了这段代码:C# Can';t从字段初始值设定项引用非静态对象,c#,C#,我写了这段代码: public partial class Form1 : Form { ThreadStart ts = new ThreadStart(fun1); public Thread t1 = new Thread(ts); public void fun1() { DA da = new DA(); string q = "select * from G5_table order by State";
public partial class Form1 : Form
{
ThreadStart ts = new ThreadStart(fun1);
public Thread t1 = new Thread(ts);
public void fun1()
{
DA da = new DA();
string q = "select * from G5_table order by State";
DataTable dt = da.Select(q);
foreach (DataRow item in dt.Rows)
{
richtxtboxEN.Text = item["Word_en"].ToString();
mode = 1;
richtxtboxEN.TextChanged += new EventHandler(richtxtboxEN_TextChanged);
}
}
private void Form1_Shown(object sender, EventArgs e)
{
t1.Start();
}
}
但我有一个错误
字段初始值设定项无法引用非静态字段、方法或属性“G5.Form1.fun1()”请将所示的
表单更改为:
private void Form1_Shown(object sender, EventArgs e)
{
t1 = new Thread(new ThreadStart(fun1));
t1.Start();
}
public Thread t1;
然后将t1
更改为:
private void Form1_Shown(object sender, EventArgs e)
{
t1 = new Thread(new ThreadStart(fun1));
t1.Start();
}
public Thread t1;
并将ts
从您的课程中完全删除
错误在于不能在字段初始值设定项中引用非静态内容。甚至还包括其他类级字段
为了澄清,字段初始值设定项是:
public Thread t1 = new Thread(ts);
由于线程t1
不是一个属性,而是在类级别(在方法之外)定义的,因此它是一个字段,并且在声明中正被初始化。它引用的是非静态字段ts
,您不能这样做。您不能像这里这样访问字段初始值设定项中的非静态方法:
ThreadStart ts = new ThreadStart(fun1);
您将需要定义一个构造函数,如下所示:
public partial class Form1 : Form
{
public Form1()
{
ts = new ThreadStart(fun1);
t1 = new Thread(ts);
}
ThreadStart ts;
public Thread t1;
这个错误和标题之间有什么联系?5分钟前发布的我的答案有什么问题?你说的完全一样。