Comments by Vartan Khachatourian (Top 34 by date)

thank you shahin. I already found the answer but yours is correct and acceptable.

im looking to realize if field can have a null value not if it is null

thank you but i didn't mean int? , i mean nullable for nvarchar. you know we don't have string? type . please give me solution exactly for my example (Book table)

thank you but 1. I didn't asked about wcf i said "web service" i now wcf is for web service too but my question is more general and i don't want to use wcf because i don't know it. 2. my questions are distinguished and i need their answers here, not a link to an artcile that doesn't contain my answers.

no samdeep i didn't find my answer in that article.

thank you

thank you i try it

no but if i must use it , where am i supposed to add the arrtibute?

well whats your solution?

there is not any constraint on this column

it's not null because firstname and lastname are not null

i read thanks

thank you sakryukov

thank you mark. simple but i didn't know.

yeah
it corrected

thank you shahin solved my prob

To fix what? I did all you and your friend timut said but it's still not changing.

If you want to know the meaning of my doesn't work, ok: In my application, when UserName (A property) is changed, therefore the value of TextEdit changes too. Ok? ... But the value of the textbox of my usercontrol doesn't change. If you see the code, I explained well and both of TextEdit and MyUserControl are the same binding.

But It doesn't work. I asked a real question with code and what's your solution? Please

INotifyPropertyChange is for my Application and I used it to fire when UserName changes and it's not in my user Control.
Ok Thanks

and when I change my property to: "get { return (String)this.GetValue(DP); }
set { this.SetValue(DP, value); }"
Then how the user control understands that it should change MyTextBox.Text?!

Ok, but it still doesn't work. I mean when I change UserName (I implemented INotifyProrertyChanged) the text of TextEdit changes but the text of mycontrol doesn't change. and it is 2 way binding

unfortunatly this doesn't work too

I mean: "get { return (String)this.GetValue(DP); }
set { this.SetValue(DP, value); }" doesn't execute at all.

Thank you, I try it and tell you soon the result

just doesn't work. TextEdit shows UserName value but UserControl doesn't, i mean: "get { return this.MyTextBox.Text; } set { MyTextBox.Text = value; }" never execute and I don't know why?!!

u could check the performance with Stopwatch!
linq's a nice performance query!

But I know it can be

Thank u