Refreshing the Form TextBox value from another called form variable

Question

0.00/5 (No votes)

See more:

I have a form frmItem. in C# Visual Studio 2008 Windows Application
In which i have a textbox of txtCompany.
On Enter Event of txtCompany I call a another form frmHelp
In frmHelp form a List Box Appears containing Company Names.
I want to send selected value of ListBox to txtCompany control of frmItem.
On Enter Event of List Box I write code as :

C#

frmItem objfrmItem=new frmItem(lstCompany.SelectedItem.ToString());
objfrmItem.Activate();
this.Close();

I received this value in Constructor of frmItem. and updated the txtCompany.Text value
but txtCompany.Text still not updated.

I am waiting for your support.

Thanks a Lot

Posted 7-Nov-11 3:53am

Manoj Dua

Updated 7-Nov-11 3:56am

Mehdi Gholam

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

ARBebopKid · Answer 1 · 2011-11-07T04:16:00

Solution 1

show the form as a dialog and then after it has been closed (hopefully with DialogResult.OK) store the value in the textbox.

Posted 7-Nov-11 4:16am

ARBebopKid

Comments

Espen Harlinn 7-Nov-11 11:27am

What I would have done, my 5 ...

Sergey Alexandrovich Kryukov · Answer 2 · 2011-11-07T04:29:00

Solution 2

This is the popular question about form collaboration. The most robust solution is implementation of an appropriate interface in form class. Please see my past solution for more detail: How to copy all the items between listboxes in two forms[^].

—SA

Posted 7-Nov-11 4:29am

Sergey Alexandrovich Kryukov

Jyoti Choudhury · Answer 3 · 2011-11-07T21:45:00

well, for the solution of this problem i would like to follow some other way.

Step-1: in frmHelp, declare a string variable say named companyName. Now, encapsulate the variable (Right click on the variable, then go to Refactor and then click Encapsulate Field. Click OK.) You'll find that something like below:

C#

public String CompanyName
{
    get { return companyName; }
    set { companyName = value; }
}

Step-2: after encapsulating when you work with ListBox.SelectedIndexChanged event. Code like below:

C#

private void YourListBoxName_SelectedIndexChanged(object sender, EventArgs e)
{
        //do else...
        this.companyName=YourListBoxName.SelectedItem.ToString();
        //do else if you need to...        
}

Step-3: Now, get into frmItem, where you have textbox for Company Name (txtCompany). Here, according to your way, on TextBox.Enter event call frmHelp like below:

C#

public void txtCompany_Enter(object sender, EventArgs e)
{
       frmHelp fh=new frmHelp();
       fh.ShowDialog();
       if(fh.CompanyName!=String.Empty)
          txtCompany.Text=fh.CompanyName;
       else
          txtCompany.Text="";
}

Remember:
**Use Form.ShowDialog() only while calling the frmHelp.
**When user closes the frmHelp after selecting the listbox in frmHelp, you'll have the value in text box of the frmItem.