DataGrid in WPF using VisualStudio C#

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Can anyone please explain me this code ,i'm new to wpf help me
tb1,tb2,tb3 are textboxes

private void Get_Click(object sender, RoutedEventArgs e)
{

if (this.tb1.Text != string.Empty)
{
User currentUser = Users.Single(select => select.Id == int.Parse(this.tb1.Text));
this.tb2.Text = currentUser.Name;
this.tb3.Text = currentUser.Salary.ToString();
}
}

Posted 17-Oct-13 2:03am

Member 10321925

Updated 17-Oct-13 2:53am

v2

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Pheonyx · Accepted Answer · 2013-10-17T03:08:00

Firstly, this doesn't appear to have anything to do with a datagrid (based on the code you have provided).

This code does the following:

When the event is trigger it checks to see if text box (tb1) is not equal to an empty string.
It would be better if that line was changed to either:

C#

if(!string.IsNullOrEmpty(this.tb1.Text))

or

C#

if(!string.IsNullOrWhitespace(this.tb1.Text))

(the latter if using .Net 4 or higher.

if this is true, then it looks in the "Users" collection to find the user who's ID matches that of the value in tb1. Then it displays the users name and salary in textboxes 2 and 3 respectively.

It has a lot of potential pitfalls this code, such as no checks to ensure a number was entered in tb1. And no handling if the selected user is not found.

But that answers your question as to what the code does.