C#.NET : Updating a UI component from another thread

I've working on an application that needed to create another thread. My problem is how to update my UI component from another thread?

Inside your form class declare this as member,

public
delegate
void
InvokeDelegate(string input);


 

then create a function that as call-back like below,

public
void UpdateLog(string input)

{

            this.tbTestMessage.Text = input;

            this.btWaitForDrawerClose.Enabled = m_boolWaitButtonState;

}


 

Okay, now how will you be able to call the function? Inside your thread make the code below,

object[] obj = new
object[1];

obj[0] = m_strTestMessage;

this.tbTestMessage.BeginInvoke(new
InvokeDelegate(UpdateLog), obj);


 

tbTestMessage is a textbox control. So, below is the complete code


 

class MyForm : Forms

{

Public delegate void InvokeDelegate(string input);

MyForm()

{

}

Public void UpdateLog(string input)

{

this.tbTestMessage.Text = input;

}


 

//this function is executed by another thread

Void MyOtherThread()

{

Object[]obj = new object[1];

Obj[0] = m_strTestMessage;

tbTestMessage.BeginInvoke(new InvokeDelete(UpdateLog, obj);

}

}


 

That's it!


 

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