C#•2y ago

Unable to cast object of type - tried to explicit conversion operator

I have encountered a problem in my game launcher, namely when assigning e.UserState I get an error "Unable to cast object of type 'GameLauncher.Changes' to type 'GameLauncher.Version', I have read that I need to create an explicit conversion operator from Version to Changes, unfortunately I don't know how to go about this, could someone help or direct me with this? below my two structures to Version I take from the page and modify values, for example: 1.5.2 to Changes I download from the site and modify the values of the directories to be downloaded from the server, for example: - data - modules - images mechanisms for downloading and modifying work correctly, unfortunately, the error is in the following lines marked on the screenshot

3 Replies

00tree00OP•2y ago

struct Version
{
    internal static Version zero = new Version(0, 0, 0);

    private short major;
    private short minor;
    private short subMinor;

    internal Version(short _major, short _minor, short _subMinor)
    {
        major = _major;
        minor = _minor;
        subMinor = _subMinor;
    }
    internal Version(string _version)
    {
        string[] versionStrings = _version.Split('.');
        if (versionStrings.Length != 3)
        {
            major = 0;
            minor = 0;
            subMinor = 0;
            return;
        }

        major = short.Parse(versionStrings[0]);
        minor = short.Parse(versionStrings[1]);
        subMinor = short.Parse(versionStrings[2]);
    }

    internal bool IsDifferentThan(Version _otherVersion)
    {
        if (major != _otherVersion.major)
        {
            return true;
        }
        else
        {
            if (minor != _otherVersion.minor)
            {
                return true;
            }
            else
            {
                if (subMinor != _otherVersion.subMinor)
                {
                    return true;
                }
            }
        }
        return false;
    }

    public override string ToString()
    {
        return $"{major}.{minor}.{subMinor}";
    }
}

struct Version
{
    internal static Version zero = new Version(0, 0, 0);

    private short major;
    private short minor;
    private short subMinor;

    internal Version(short _major, short _minor, short _subMinor)
    {
        major = _major;
        minor = _minor;
        subMinor = _subMinor;
    }
    internal Version(string _version)
    {
        string[] versionStrings = _version.Split('.');
        if (versionStrings.Length != 3)
        {
            major = 0;
            minor = 0;
            subMinor = 0;
            return;
        }

        major = short.Parse(versionStrings[0]);
        minor = short.Parse(versionStrings[1]);
        subMinor = short.Parse(versionStrings[2]);
    }

    internal bool IsDifferentThan(Version _otherVersion)
    {
        if (major != _otherVersion.major)
        {
            return true;
        }
        else
        {
            if (minor != _otherVersion.minor)
            {
                return true;
            }
            else
            {
                if (subMinor != _otherVersion.subMinor)
                {
                    return true;
                }
            }
        }
        return false;
    }

    public override string ToString()
    {
        return $"{major}.{minor}.{subMinor}";
    }
}

struct Changes
{

    internal static Changes zero2 = new Changes("");


    private string major;


    internal Changes(string _major)
    {
        major = _major;

    }

    internal bool IsDifferentThan(Changes _changesVersion)
    {
        if (major != _changesVersion.major)
        {
            return true;
        }

        return false;
    }
    public override string ToString()
    {
        return $"{major}";
    }
}

struct Changes
{

    internal static Changes zero2 = new Changes("");


    private string major;


    internal Changes(string _major)
    {
        major = _major;

    }

    internal bool IsDifferentThan(Changes _changesVersion)
    {
        if (major != _changesVersion.major)
        {
            return true;
        }

        return false;
    }
    public override string ToString()
    {
        return $"{major}";
    }
}

in Version structure i will added

public static explicit operator Version(Changes changes) 
        {
            return new Version
            {

                major = short.Parse(changes.major)
            };
        }

public static explicit operator Version(Changes changes) 
        {
            return new Version
            {

                major = short.Parse(changes.major)
            };
        }

and in Changes structure

public static explicit operator Changes(Version content)
        {
            return new Changes
            {
                major = $"{content.major2}.{content.minor2}.{content.subMinor2}".ToString()
            };
        }

public static explicit operator Changes(Version content)
        {
            return new Changes
            {
                major = $"{content.major2}.{content.minor2}.{content.subMinor2}".ToString()
            };
        }

but still doesn't work

00tree00OP•2y ago

Here is url to function InstallGameFiles https://hastebin.com/share/ihopiguwut.java wherever DownloadChangesCompletedCallback is used there UserState is passed

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00tree00OP•2y ago

errors

Gaming

Programming

Unable to cast object of type - tried to explicit conversion operator