C# Visual Studio Open New Window

cvisual studio 2012windowwpfxaml

I am new to C# and Visual Studio,
But I started a little project that opens a main window and shows a table.
The Presenter of the window contains an Observable:

public ObservableCollection<FruitsPresenter> Fruits { get; set; }

This collections contains information about some fruits.
Then It shows a table of all i'ts content.
I made a button that supposed to open a new window and create a 'entry form'
that will ask for information and then add to the collection a new item.

I couldn't manage to do it. Any help?

Best Answer

Adding a new form and opening it is very simple in C#/Visual Studio.

Do the following:

Add a new form to your project:

Do this by right-clicking your project and choose: Add -> Windows Form.
Name the form
Create new instance of form and call form:

Go to the location where the new form should be called from. Add following code there:

NewForm newFrm = new NewForm();
newFrm.Show();

New form will be visible when application calls code above.

Related Solutions

Javascript – way to detect if a browser window is not currently active

Since originally writing this answer, a new specification has reached recommendation status thanks to the W3C. The Page Visibility API (on MDN) now allows us to more accurately detect when a page is hidden to the user.

document.addEventListener("visibilitychange", onchange);

Current browser support:

Chrome 13+
Internet Explorer 10+
Firefox 10+
Opera 12.10+ ^{[read notes]}

The following code falls back to the less reliable blur/focus method in incompatible browsers:

(function() {
  var hidden = "hidden";

  // Standards:
  if (hidden in document)
    document.addEventListener("visibilitychange", onchange);
  else if ((hidden = "mozHidden") in document)
    document.addEventListener("mozvisibilitychange", onchange);
  else if ((hidden = "webkitHidden") in document)
    document.addEventListener("webkitvisibilitychange", onchange);
  else if ((hidden = "msHidden") in document)
    document.addEventListener("msvisibilitychange", onchange);
  // IE 9 and lower:
  else if ("onfocusin" in document)
    document.onfocusin = document.onfocusout = onchange;
  // All others:
  else
    window.onpageshow = window.onpagehide
    = window.onfocus = window.onblur = onchange;

  function onchange (evt) {
    var v = "visible", h = "hidden",
        evtMap = {
          focus:v, focusin:v, pageshow:v, blur:h, focusout:h, pagehide:h
        };

    evt = evt || window.event;
    if (evt.type in evtMap)
      document.body.className = evtMap[evt.type];
    else
      document.body.className = this[hidden] ? "hidden" : "visible";
  }

  // set the initial state (but only if browser supports the Page Visibility API)
  if( document[hidden] !== undefined )
    onchange({type: document[hidden] ? "blur" : "focus"});
})();

onfocusin and onfocusout are required for IE 9 and lower, while all others make use of onfocus and onblur, except for iOS, which uses onpageshow and onpagehide.

Git – .gitignore for Visual Studio Projects and Solutions

See the official GitHub's "Collection of useful .gitignore templates".

The .gitignore for Visual Studio can be found here:
https://github.com/github/gitignore/blob/master/VisualStudio.gitignore

Best Answer

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Javascript – way to detect if a browser window is not currently active

Git – .gitignore for Visual Studio Projects and Solutions

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