C#

// Thread 1
{
    Dictionary localDic=Dic1; // This is my approach avoiding a lock
    localDic.op1();
    localDic.op2();
    localDic.op3();
    // end of scope for localDic
}

Luc Pattyn [Forum Guidelines] [My Articles]

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Voting for dummies? No thanks.

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// Thread 1
{
    Dictionary localDic=Dic1;
    localDic.op1();
    localDic.op2();
    localDic.op3();
}


// Thread 2
{
    Dictionary Dic2 = new Dictionary();
    Dic2.insert();
    Dic2.insert();
    Dic2.insert();
    Dic1 = Dic2;
}

Luc Pattyn wrote:

Dic1=Dic2; is an
atomic operation.

void Invoke(Delegate del) {
    Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Input, del);
}

void OnWhatever(...) {
   textBox.Text = "Very bad thing from a different thread context";
}

void Invoke(Delegate del) {
   Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Input, del);
}
 
void OnWhatever(...) {
   Invoke(new Action( () => { textBox.Text = "This is safe from a different thread context"; } ));
}