Hi, I have WPF window or page, where there is a textbox, button and a label/textblock. Now I need to collect those controls name at run time (guess after click the button). How can I get those names? Anyone have any idea? In windows form we can collect using ControlsCollections, but WPF does not have any ControlsCollections class.
"Excuse if any gaffe."Md Nazmul AhsanProgrammer (.NET Framework)CIS, IADCS & DIT
No one have no idea !!! Last few days I work with that then I find a way to collect the controls from WPF window or page. But still it has some problem, let see the code first.
private static void GetControlsList(Visual control, int level) { int ChildNumber = VisualTreeHelper.GetChildrenCount(control); for (int i = 0; i <= ChildNumber - 1; i++) { Visual ChildName = (Visual)VisualTreeHelper.GetChild(control, i); if (ChildName is FrameworkElement) { sbListControls.Append("<" + ChildName.ToString() + ">"); sbListControls.Append(Environment.NewLine); string childNameProperties = (ChildName as FrameworkElement).Name.ToString(); if (childNameProperties != string.Empty || childNameProperties != "") { // sbListControls.Append(new string(' ', level * indent)); sbListControls.Append("<" + childNameProperties + ">"); // sbListControls.Append("<" + ChildName.GetValue(FrameworkElement.+ ">"); sbListControls.Append("<" + ChildName.GetType() + ">"); //sbListControls.Append(ChildName.GetType()); sbListControls.Append(Environment.NewLine); } //Get the child under child if (VisualTreeHelper.GetChildrenCount(ChildName) > 0) { GetControlsList(ChildName, level + 1); } } sbListControls.Append("</" + ChildName.ToString() + ">"); sbListControls.Append(Environment.NewLine); } // sbListControls.Append("</" + (control as FrameworkElement).Name.ToString() + ">"); }
It gives me more than the controls ...... lot more. I am totally freak out. Need some help. But main problem is I am not getting the display value of the controls.
I have done a simple test for you. I have added 2 buttons and 1 textblock. I can receive all controls using UIElementCollection
Window1.xaml --> Code
//<
Grid x:Name="LayoutRoot" Background="White">
//<TextBlock Text="This is a text block"></TextBlock>
//<Button x:Name="btnHello" Content="Hello" Width="100" Height="30" Margin="0,80,0,0" Click="btnHello_Click"></Button>
//<Button x:Name="btn2Test" Content="Test" Width="100" Height="30" Margin="0,180,0,0"></Button>
//</Grid>
Window1.xaml.cs --> code
UIElementCollection objUIElementCollection = LayoutRoot.Children;
foreach (UIElement obj in objUIElementCollection) {
if (obj.GetType().ToString() == "System.Windows.Controls.Button") {
Button b = (Button)obj; ; MessageBox.Show(b.Name); }
if (obj.GetType().ToString() == "System.Windows.Controls.TextBlock") {
TextBlock t = (TextBlock)obj; ; MessageBox.Show(t.Text);
}
MJ FerdousProject Manager, Congral LLCTechnical Author, DevMedia, Brazil
Yap we can take controls using UIElementCollection ....but... problem is I need the get that all dynamically. No hard code will be done.
You wrote-->
Hi, I have WPF window or page, where there is a textbox, button and a label/textblock. Now I need to collect those controls name at run time (guess after click the button).
Sorry. I didnt get your point. You said that you have window with textbox and button/label. You need to collect all controls runtime.
and foreach (UIElement obj in objUIElementCollection) {} loop will give you all the objects one after another in runtime.
Button b = (Button)obj;
MessageBox.Show(b.Name);
when you do specific cast by checking Type. you can set or get all properties of that object.
What do you mean by hard code here. Do you wanna add textbox, button control dynamically?
Let me know if the explanation is not clear.
Sorry I think, I did not make it clear. I wrote ---------------->
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Yes your sol in absolutely right when I have same thing (textbox , button and label). If I need to take a rediobutton or a richtextbox that code will need to modify again in......
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if (obj.GetType().ToString() == "System.Windows.Controls.TextBlock")
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I can take GetType() of all obj but I can not find the display value of obj.
Please let me know the type of object i.e redio button?
and name of the properties which u want to get run time.
I wanna test it for you.
Thanks
Sorry. I dont agree with you.
You can also get value of the object in runtime. when you have the object then you have everything of that. see the following code:
i have just tested this code to get the inner text value of RichTextBox
if (obj.GetType().ToString() == "System.Windows.Controls.RichTextBox") {
RichTextBox t = (RichTextBox)obj;
MessageBox.Show(new TextRange(t.Document.ContentStart, t.Document.ContentEnd).Text);
Sorry for late reply I was out of town for few days.Thanks for concernt about my problem. I can not able to use LayoutRoot.Children in browser application. Is it possible to use it in browser application?
Yes it is also possible to use in Browser appliation.
Assign //x:Name="LayoutRoot"
as your grid name and use your all controls inside this. then you sould able to use it.
Hi,
At last I get the solutions of this problem. Please look the reference link for details.
I have already give a reference link to solve this problem. But I thought it is better to post some code here.
If you just need then controls name ....then it’s better to go with LogicalTreeHelper ....through VisualTreeHelper and LogicalTreeHelper, Simply You can traverse the whole tree and get desired control and it also help to get current Window by traversing with parent and going to root element. Anywaz nice work Nazmul Ahsan.
binito .... Morshed Anwar (http://morshedanwar.wordpress.com/)
Hi Anwar vi, I am really sorry. I do not understand you point. Can you please describe it more?
