Question

如果当前安装了LocalDB，如何检查c＃代码？另外，如何检查SQLNCLI11是否存在于系统中？

Answer 1

通过查找此注册表项来检查是否已安装LocalDB：

[HKLM\SOFTWARE\Microsoft\Microsoft SQL Server Local DB\Installed Versions\11.0]

SQLNCLI11 - 检查此文件的文件版本和存在：C:\WINDOWS\system32\sqlncli.dll

Answer 2

我正在使用the answer to this question 检查是否存在sqllocaldb.exe

像这样：

public static bool IsLocalDBInstalled()
{
    return ExistsOnPath("SqlLocalDB.exe"); ;
}

public static bool ExistsOnPath(string fileName)
{
    return GetFullPath(fileName) != null;
}

public static string GetFullPath(string fileName)
{
    if (File.Exists(fileName))
        return Path.GetFullPath(fileName);

    var values = Environment.GetEnvironmentVariable("PATH");
    foreach (var path in values.Split(';'))
    {
        var fullPath = Path.Combine(path, fileName);
        if (File.Exists(fullPath))
            return fullPath;
    }
    return null;
}

Answer 3

这是检查LOCALDB的VB.NET示例

Public Shared Function CheckLocalDBExists() As Boolean
    Dim s As String = ""
    Dim reg As RegistryKey
    Dim rtn As Boolean = False
    reg = Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\Microsoft SQL Server Local DB\Installed Versions\12.0", True)
    Try
        s = reg.GetValue("ParentInstance", "").ToString
        reg.Close()
    Catch ex As Exception
        s = Nothing
    End Try
    'MessageBox.Show(s)
    If s = "MSSQL12E.LOCALDB" Then
        rtn = True
    End If
    Return rtn
End Function

Answer 4

我找到了这个包含SQLLocalDB的nuget包有以下命令

SqlLocalDbApi.IsLocalDBInstalled()

SQL 2012 LocalDB：如果当前安装了c＃，如何检入？

4 个答案: