How to check PostgreSql is installed or not in windows machine using C#.net?

Question

I have a WPF application with PostgreSQL, I need to check PostgreSQL is installed in the local machine.

const string PostgresSQLKeyName = "SOFTWARE\\PostgreSQL\\Installations\\postgresql-x64-9.4";
const string NetRegKeyValue = "DllFullPath";

private static bool GetRegistryValue<T>(RegistryHive hive, string key, string value, RegistryValueKind kind, out T data)
{
    bool success = false;
    data = default(T);

    using (RegistryKey baseKey = RegistryKey.OpenRemoteBaseKey(hive, String.Empty)) {
        if (baseKey != null) {
            using (RegistryKey registryKey = baseKey.OpenSubKey(key, RegistryKeyPermissionCheck.ReadSubTree)) {
                if (registryKey != null) {
                    try {
                        // If the key was opened, try to retrieve the value.
                        RegistryValueKind kindFound = registryKey.GetValueKind(value);
                        if (kindFound == kind) {
                            object regValue = registryKey.GetValue(value, null);
                            if (regValue != null) {
                                data = (T)Convert.ChangeType(regValue, typeof(T), CultureInfo.InvariantCulture);
                                success = true;
                            }
                        }
                    }
                    catch (IOException ex) {
                        //Logger.Write(ex, "GetRegistryValue-Detection.cs", "GetRegistryValue");
                        success = false;
                    }
                }
            }
        }
    }
    return success;
}

But I am always getting the result false (= not installed) even if I installed it. What am I missing here?

@ Vivek , postgresql-x64-9.4 ,is already installed in my machine — Jidheesh Rajan
– Jidheesh Rajan, Commented May 13, 2015 at 8:48

AS Mackay · Accepted Answer · 2019-07-25 07:06:51Z

1

Check Registry Entry using C#

var postgres = Registry.CurrentUser.OpenSubKey(@"Software\pgadmin");
if(postgres != null)
{
    //postgreSQL is installed on your machine
}

edited Jul 25, 2019 at 7:06

AS Mackay

2,8559 gold badges21 silver badges27 bronze badges

answered Jul 25, 2019 at 6:48

Prince Kumar

551 silver badge9 bronze badges

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