c#中如何跨线程调用windows控件

Posted 2023-03-26

参考技术A 在辅助线程调用(在创建辅助线程时可将此方法通过delegate传到辅助线程中)下面的方法InvokeControl();

//写在主线程中(windows控件)
private void InvokeControl()

if (this.InvokeRequired)
this.Invoke(new DelegateChangeText(ChangeText));
else
this.ChangeText();


private void ChangeText()

this.TextBox.Text = "sd";


public delegate void DelegateChangeText(); 参考技术B 定义委托，然后用invoke
private
void
ucMidPartsid_Load(object
sender,
EventArgs
e)

if
(is_Load
==
true)

thread
=
new
Thread(new
ThreadStart(this.LoadData));
thread.Start();

//if
(datafinish
!=
null)
//
//
datafinish(this,
e);
//

private
void
LoadData()

QueryDataCallBack
deleg;
deleg
=
new
QueryDataCallBack(this.DataBinding);
this.Invoke(deleg,null);

private
void
DataBinding()

partstableAdapter
=
new
GreatWall.SCM.Parts.DataAccess.DAParts.PartsTableAdapter();
partstableAdapter.Fill(dsParts.GB_PARTS);
cobMidPartsid.DataSource
=
dsParts.GB_PARTS;
cobMidPartsid.DisplayMember
=
"B_PARTSID";
cobMidPartsid.ValueMember
=
"B_ID";
EventArgs
e
=
new
EventArgs();
if
(datafinish
!=
null)

finish
=
true;
datafinish(this,
e);

参考技术C 在构造函数里使用属性
CheckForIllegalCrossThreadCalls 值设置为 false
即 public Form1()

CheckForIllegalCrossThreadCalls = false;
参考技术D 定义委托，然后用invoke
private void ucMidPartsid_Load(object sender, EventArgs e)


if (is_Load == true)

thread = new Thread(new ThreadStart(this.LoadData));
thread.Start();


//if (datafinish != null)
//
// datafinish(this, e);
//

private void LoadData()

QueryDataCallBack deleg;
deleg = new QueryDataCallBack(this.DataBinding);
this.Invoke(deleg,null);



private void DataBinding()

partstableAdapter = new GreatWall.SCM.Parts.DataAccess.DAParts.PartsTableAdapter();
partstableAdapter.Fill(dsParts.GB_PARTS);
cobMidPartsid.DataSource = dsParts.GB_PARTS;
cobMidPartsid.DisplayMember = "B_PARTSID";
cobMidPartsid.ValueMember = "B_ID";
EventArgs e = new EventArgs();
if (datafinish != null)

finish = true;
datafinish(this, e);


本回答被提问者采纳 第5个回答  2007-12-19 定义委托 delegate
调用 Invoke
提问之前先利用baidu搜索下吧