i have string MyText that hold "L1"
i have label control that his name is "L1"
is there any way to read label L1 using MyText ?
something like: TMT = MyText.Text
or: TMT = ((Control)MyText.ToString()).Text;
thanks in advance
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3 Answers
Find a control with specified name:
var arr = this.Controls.Where(c => c.Name == "Name");
var c = arr.FirstOrDefault();
or search within controls of specified type:
var arr = this.Controls.OfType<Label>();
var c = arr.FirstOrDefault();
Edit:
if you have an array of control names you can find them:
var names = new[] { "C1", "C2", "C3" };
// search for specified names only within textboxes
var controls = this.Controls
.OfType<TextBox>()
.Where(c => names.Contains(c.Name));
// put the search result into a Dictionary<TextBox, string>
var dic = controls.ToDictionary(k => k, v => v.Text);
(everything above requires .NET 3.5)
If you don have it, you can do next:
Control[] controls = this.Controls.Find("MyControl1");
if(controls.Lenght == 1) // 0 means not found, more - there are several controls with the same name
{
TextBox control = controls[0] as TextBox;
if(control != null)
{
control.Text = "Hello";
}
}
1 Comment
ErTR
Controls has no Where method for me
An easier way is to do something like this:
string TMT = "myButton";
// later in the code ...
(Controls[TMT] as Button).Text = "Hullo";
for instance.
3 Comments
corvuscorax
It works just fine ... there are two overloads - one for ints and one for strings
abatishchev
If you are 100% sure that
this.Controls contains specified name, you can cast type instead of operator as: ((Button)Controls["myButton"]).Text. But it's better to check everything
Pratikk
It is not working, it throws exception of null reference exception
You can do something like this:
foreach (var c in this.Controls)
{
if (c is Label)
{
var x = (Label)c;
if (x.Name == "label1")
{
x.Text = "WE FOUND YOU";
break;
}
}
}
However, best practice is to avoid such cases ... If you could speculate a bit more why you need this, there will probably be a better solution.
--edit:thanks for noticing that is/typeof ..
2 Comments
Gold
i have string arr[4] that contain "l1,l2,l3,l4" - and i need to read the text that in the label that named l1,l2,l3,l4. how do to it ? i try: ((control)arr[1].tostring()).text - but get error
abatishchev
You should use operator
is instead of types comparison. Also should break on search success..