Question

我正在使用Windows Installer（而不是wix）为我的程序编写安装程序。在某些情况下，我想从我的自定义操作取消安装过程。在旁边，我想用我的文字显示错误信息。这是怎么回事？

C＃，。net 3.5

Answer 1

您可以通过创建错误自定义操作来执行此操作。将错误自定义操作的条件设置为失败条件（如果条件评估为true，安装将失败）并将消息设置为自定义文本。

Answer 2

为我工作：

上下文：出于某种原因，我需要检查用户是否安装了3.5SP1，取消安装并重定向到正确的下载页面。

步骤1：像这样修改你的安装程序

    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand)]
    public override void Install(IDictionary stateSaver)
    {
        //Check if the FrameWork 3.5SP1 is installed
        if (mycondition)
        {
            //3.5SP1 is installed, ask for framework install
            if (TopMostMessageBox.Show("body", "title", MessageBoxButtons.YesNo) == DialogResult.Yes)
                System.Diagnostics.Process.Start("http://Microsoft FRW Link");

            WindowHandler.Terminate();
        }
        else
            base.Install(stateSaver);
    }

步骤2：使用该代码来托管您的MessageBox（我把它带到其他地方，没有时间自己找到它）

static public class TopMostMessageBox
{
    static public DialogResult Show(string message)
    {
        return Show(message, string.Empty, MessageBoxButtons.OK);
    }

    static public DialogResult Show(string message, string title)
    {
        return Show(message, title, MessageBoxButtons.OK);
    }

    static public DialogResult Show(string message, string title,
        MessageBoxButtons buttons)
    {
        // Create a host form that is a TopMost window which will be the 

        // parent of the MessageBox.

        Form topmostForm = new Form();
        // We do not want anyone to see this window so position it off the 

        // visible screen and make it as small as possible

        topmostForm.Size = new System.Drawing.Size(1, 1);
        topmostForm.StartPosition = FormStartPosition.Manual;
        System.Drawing.Rectangle rect = SystemInformation.VirtualScreen;
        topmostForm.Location = new System.Drawing.Point(rect.Bottom + 10,
            rect.Right + 10);
        topmostForm.Show();
        // Make this form the active form and make it TopMost

        topmostForm.Focus();
        topmostForm.BringToFront();
        topmostForm.TopMost = true;
        // Finally show the MessageBox with the form just created as its owner

        DialogResult result = MessageBox.Show(topmostForm, message, title,
            buttons);
        topmostForm.Dispose(); // clean it up all the way


        return result;
    }
}

第三步：杀死msiexec

internal static class WindowHandler
{
    internal static void Terminate()
    {
        var processes = Process.GetProcessesByName("msiexec").OrderBy(x => x.StartTime); \\DO NOT FORGET THE ORDERBY!!! It makes the msi processes killed in the right order
        foreach (var process in processes)
        {
            var hWnd = process.MainWindowHandle.ToInt32(); 
            ShowWindow(hWnd, 0); //This is to hide the msi window and only show the popup
            try
            {
                process.Kill();
            }
            catch
            {
            }
        }
    }

    [DllImport("User32")]
    private static extern int ShowWindow(int hwnd, int nCmdShow);
}

用勺子将其与摇动器混合并起作用;）

Answer 3

只需从自定义操作返回ERROR_INSTALL_USEREXIT。

http://msdn.microsoft.com/en-us/library/windows/desktop/aa368072(v=vs.85).aspx

请参阅以下链接，了解如何显示错误消息：

http://msdn.microsoft.com/en-us/library/windows/desktop/aa371247(v=vs.85).aspx

从我的自定义操作取消安装

3 个答案: