Question:What will be the output if in a WinForms application, the following code is executed in the Load event of a form? Assume this form has lblMessage as a Label Control.
private void Form1_Load(object sender, EventArgs e)
{
    try
    {
        ThreadPool.QueueUserWorkItem(ShowMessage,null);
    }
    catch (Exception ex)
    {
    }
}

private void ShowMessage(object obj)
{
    try
    {
        lblMessage.Text = "Hello from Thread Pool";
    }
    catch (Exception ex)
    {
    }
}
 

A lblMessage.Text will be set to "Hello from Thread Pool". 
B An InvalidOperationException will be thrown for the function ShowMessage as the UI can be updated only from the UI thread. 
C Behavior will vary depending on the form loaded. 
D None of these. 

+ Answer
B 

+ Report

Mohammad Towhidul Islam

Editor, VCampus

Your Name

Your Email

Type of Report
Spelling MistakeIncorrect AnswerGrammar MistakeContent MissingImproper Text FormatInsufficient AnswerDuplicate QuestionImproper Sentence StructureImproper Equation/FormulaOther

Description