Check for updates - Leo-Corporation/LeoCorpLibrary GitHub Wiki

• Introduction
• Functions
  • a. IsAvailable
  • b. Check
    • 1. Check
    • 2. CheckWPF
  • c. GetLastVersion
  • d. Install
  • e. GetLastVersionAsync

When you create a software, you usually want to update it to add new features or correct bugs. Thanks to LeoCorpLibrary, it's very simple to implement an update system.

To use the methods and other features of LeoCorpLibrary, dont forget to add this line of code on top of your code file.

C#

using LeoCorpLibrary;

VB

Imports LeoCorpLibrary

This function is available in version 1.1 and higher.

The IsAvailable() method allows you to check if a updates are avaialable for your software. Returns a bool value.

LeoCorpLibrary.Update.IsAvailable()

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Here's this method's arguments

Here's an example of usage that uses the GetLastVersion method:

C#

string lastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt");
if (LeoCorpLibrary.Update.IsAvailable("1.0.0.0", lastVersion)) // If updates are available
{
    MessageBox.Show("Update available");
}
else
{
    MessageBox.Show("No update available");
}

VB

Dim lastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt")
If (LeoCorpLibrary.Update.IsAvailable("1.0.0.0", lastVersion)) Then ' If updates are available
    MsgBox("Update available")
Else
    MsgBox("No update available")
End If

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This function is available in version 1.1 and higher.

The Check() method allows you to check updates for your software. If updates are available, a specified form will show. Same thing if no updates are available.

LeoCorpLibrary.Update.Check()

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Here's this method's arguments

Here's an example that uses the GetLastVersion method:

C#

string lastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt");
LeoCorpLibrary.Update.Check("1.0.0.0", lastVersion, new MAJ_AV(), new MAJ_UN());
// A window will open depending on the result

VB

Dim LastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt")
LeoCorpLibrary.Update.Check("1.0.0.0", LastVersion, new MAJ_AV, new MAJ_UN)
' A window will open depending on the result

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This function is available in version 2.2 and higher.

The CheckWPF() method allows you to check updates for your software. If updates are available, a specified window will show. Same thing if no updates are available.

LeoCorpLibrary.Update.CheckWPF()

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Here's this method's arguments

Here's an example that uses the GetLastVersion method:

C#

string lastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt");
LeoCorpLibrary.Update.Check("1.0.0.0", lastVersion, new MAJ_AV(), new MAJ_UN());
// A window will open depending on the result

VB

Dim LastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt")
LeoCorpLibrary.Update.Check("1.0.0.0", LastVersion, new MAJ_AV, new MAJ_UN)
' A window will open depending on the result

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This function is available in version 1.1 and higher.

The GetLastVersion() method download a string from a specfic webpage where a .txt file that contains the last version. Returns a string.

This method has only one argument:

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Here's an example of usage:

C#

string lastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt");
// You can use the lastVersion variable in the IsAvailable() method. 
// or in the Check() method.

VB

Dim LastVersion = LeoCorpLibrary.Update.GetLastVersion("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt")
' You can use the lastVersion variable in the IsAvailable() method. 
' or in the Check() method.

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This function is available in version 1.1 and higher.

The Install() method allow to install an update for your software. if you want to update your program using this method, we advice you to uise this method in another program (Updater). This program needs admin privileges to update the software. You can enable this feature in app.manifest. You can create it in Visual Studio. Edit this:

- <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
+ <requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />

Here's this method's arguments:

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Example:

C#

string link = "https://dl.dropboxusercontent.com/s/tlekj6j834tgi3r/GestionPersoX.exe";

LeoCorpLibrary.Update.Install("C:/Programme/Programme.exe", link);
// If the program is in 'C:\Program'

LeoCorpLibrary.Update.Install("/Programme.exe", link, true)

VB

Dim link = "https://dl.dropboxusercontent.com/s/tlekj6j834tgi3r/GestionPersoX.exe"

LeoCorpLibrary.Update.Install("C:/Programme/Programme.exe", link)
' If the program is in 'C:\Progtam'

LeoCorpLibrary.Update.Install("/Programme.exe", link, True)

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This function is available in version 2.1 and higher.

The GetLastVersionAsync() method allows you to obtain the last version of the software asynchronously from a *.txt file.

It's in

LeoCorpLibrary.Update.GetLastVersionAsync()

Here's this method's argument:

Note: You need to place the namespace LeoCorpLibrary before the Update class because of a conflict with Control.Update.

Here's an example of usage:

C#

async void GetVersion()
{
    string version = await LeoCorpLibrary.Update.GetLastVersionAsync("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt");
}

VB

Private Async Sub GetVersion()
    Dim version As String = Await LeoCorpLibrary.Update.GetLastVersionAsync("https://dl.dropboxusercontent.com/s/j3fn78x3lcmowpr/Version.txt")
End Sub

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