So basically I was trying to access an Oracle database within unity and mono-develop. I copied the needed DLLs System.Data and System.Data.OracleClient
from under: C:\Program Files (x86)\Unity\Editor\Data\Mono\lib\mono\2.0
to the Project's Assets folder,
Here's my C# code:
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.OracleClient;
public class OracleConn : MonoBehaviour
{
public string connectStr = "SomeConnectionString";
string TBName = "CZRK";
List<string> listOfID = new List<string>(); //ID
List<string> listOfName = new List<string>(); //NAME
private string content;
void Start()
{
OracleConnection conn = new OracleConnection(connectStr);
conn.Open(); //the line that causes error
}
}
then the error DllNotFoundException: oci pops out when executing conn.Open()
the full error log:
DllNotFoundException: oci
System.Data.OracleClient.Oci.OciCalls.OCIEnvCreate (System.IntPtr& envhpp, OciEnvironmentMode mode, IntPtr ctxp, IntPtr malocfp, IntPtr ralocfp, IntPtr mfreep, Int32 xtramem_sz, IntPtr usrmempp)
System.Data.OracleClient.Oci.OciEnvironmentHandle..ctor (OciEnvironmentMode mode)
System.Data.OracleClient.Oci.OciGlue.CreateConnection (OracleConnectionInfo conInfo)
System.Data.OracleClient.OracleConnectionPoolManager.CreateConnection (OracleConnectionInfo info)
System.Data.OracleClient.OracleConnectionPool.CreateConnection ()
System.Data.OracleClient.OracleConnectionPool.GetConnection ()
System.Data.OracleClient.OracleConnection.Open ()
(wrapper remoting-invoke-with-check) System.Data.OracleClient.OracleConnection:Open ()
OracleConn.Start () (at Assets/OracleConn.cs:25)
Besides, I also tried copy the DLL file oci.dll from oracleDB_11g into the assets folder, but problem remains, any ideas??
Got the same error on 5.5.0f3 also trying to hit 11g. My suspicion is the current set of drivers go up to 10g. Therefore I went 3rd party. I got https://www.devart.com/dotconnect/ working quickly. Note, I DO NOT work for them.
Related
Asking for advice and references.
Using Visual Studio, I have an Azure Web Apps project in my solution. Now, I'm programming my Stored Procedures for CosmosDB. Using the CosmosDB Emulator, I can simply insert the Stored Procedure code directly into the browser editor window. All good and fine, and everything is working beautifully.
I also have a NodeJS project sitting alongside my Web App project. This allows me to store the Stored Procedures as files. The associated Console App is able to connect and modify the CosmosDB Emulator as expected.
My question is, using Visual Studio, what is the best way to lay out my project, so that it's not done on napkins and prayers?
I'm wondering how I should be structuring my project layout and assets to align with current "best practices". Is there any information, articles or posts that you guys/gals have found that talk about this specifically? Would I be running all of these procedures against CosmosDB manually, or are there automated procedures people have devised? I would like to be able to test these stored procedures first, against the Emulator, and with little-to-no source code change, update staging.
Thanks!
I have just recently asked myself the same question regarding stored procedure migrations.. I am currently running a basic Migrate Method that will get stored procedure content from a js file and replace/create the stored procedure, this runs on startup (in startup.cs)
The main gist of the code below, you will need to create the very basic internal methods (comments welcome):
using System;
using System.IO;
using System.Threading.Tasks;
using App.Data.Access;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Azure.Documents;
namespace App.Data.StoredProcedures
{
public class Migrations : IMigrations
{
private readonly IHostingEnvironment _hostingEnvironment;
private readonly IDocumentDbContext _documentDbContext;
public Migrations(IHostingEnvironment hostingEnvironment,IDocumentDbContext documentDbContext)
{
_hostingEnvironment = hostingEnvironment;
_documentDbContext = documentDbContext;
}
public async Task<bool> Migrate()
{
try
{
await AddUpdateBulkDeleteStoredProcedure();
return true;
}
catch (Exception exception)
{
throw new Exception("Error running CosmosDb stored procedure migrations,error" + exception.Message);
}
}
public string GetStoredProcedureScript(string filename)
{
var script = Path.Combine(_hostingEnvironment.WebRootPath, "App_Data", "CosmosDbStoredProcedures", filename);
return IO.File.ToString(script);
}
public async Task<bool> AddUpdateBulkDeleteStoredProcedure()
{
const string storedProcedureId = "BulkDeleteStoredProcedure";
var function = GetStoredProcedureScript($"{storedProcedureId}.js");
if (string.IsNullOrWhiteSpace(function))
{
throw new Exception($"Error running DocumentDb Stored procedure migrations, {storedProcedureId} content is empty");
}
try
{
await _documentDbContext.Client.ReplaceStoredProcedureAsync(_documentDbContext.GetStoredProcedureUri(storedProcedureId), new StoredProcedure {Id = storedProcedureId, Body = function});
return true;
}
catch
{
// ignore
}
await _documentDbContext.Client.CreateStoredProcedureAsync(_documentDbContext.DocumentCollectionUri, new StoredProcedure {Id = storedProcedureId, Body = function});
return true;
}
}
}
I have a Xamarin Forms solution. I added sqlite-net-pcl as reference to all projects. It works fine on Android but crashes on Windows 8.1 and Windows Phone 8.1. I have an IOS project but I don't have OSX at the moment to try it.
I use this in the Windows projects to access the database:
using System.IO;
using SQLite;
using Xamarin.Forms;
using HelloXamarin.Windows;
using Windows.Storage;
[assembly: Dependency(typeof(SQLiteDb))]
namespace HelloXamarin.Windows
{
public class SQLiteDb : ISQLiteDb
{
public SQLiteAsyncConnection GetConnection(string databaseName)
{
var documentsPath = ApplicationData.Current.LocalFolder.Path;
var path = Path.Combine(documentsPath, databaseName);
return new SQLiteAsyncConnection(path);
}
}
}
Here are my references:
I get this exception when trying to access the database:
The type initializer for 'SQLite.SQLiteConnection' threw an exception.
Unable to load DLL 'e_sqlite3': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
at SQLitePCL.SQLite3Provider_e_sqlite3.NativeMethods.sqlite3_win32_set_directory(UInt32 directoryType, String directoryPath)
at SQLitePCL.SQLite3Provider_e_sqlite3..ctor()
at SQLitePCL.Batteries_V2.Init() at SQLite.SQLiteConnection..cctor()
I have no idea how to solve this, please help me!
The whole solution is available on GitHub:
https://github.com/apspot/HelloXamarin
For me, it worked by adding the e_sqlite3 bundle to the executable project
By this time the issue is still open. So before they come with some solid fix, you can use this work around, to solve the issue for now.
Add one helper class
using System;
using System.Diagnostics;
using System.IO;
namespace SQLitePCL
{
public class NativeLibraryHack
{
public static bool Hacked { get; private set; }
public static bool DoHack()
{
if (Hacked) return true;
try
{
const string runtimeFolderName = "/runtimes";
var destinationPath = typeof(SQLitePCL.raw).Assembly.Location
.Replace("\\", "/");
var destinationLength = destinationPath.LastIndexOf("/", StringComparison.OrdinalIgnoreCase);
var destinationDirectory = destinationPath.Substring(0, destinationLength) + runtimeFolderName;
var sourcePath = new Uri(typeof(SQLitePCL.raw).Assembly.CodeBase)
.AbsolutePath;
var sourceLength = sourcePath.LastIndexOf("/", StringComparison.OrdinalIgnoreCase);
var sourceDirectory = sourcePath.Substring(0, sourceLength) + runtimeFolderName;
if (Directory.Exists(sourceDirectory))
CopyFilesRecursively(new DirectoryInfo(sourceDirectory), new DirectoryInfo(destinationDirectory));
}
catch (Exception ex)
{
//Ignore Exception
Debug.WriteLine(ex.Message);
return false;
}
return (Hacked = true);
}
private static void CopyFilesRecursively(
DirectoryInfo source,
DirectoryInfo target
)
{
foreach (var dir in source.GetDirectories())
CopyFilesRecursively(dir, target.CreateSubdirectory(dir.Name));
foreach (var file in source.GetFiles())
{
try
{
var destinationFile = Path.Combine(target.FullName, file.Name);
if (!File.Exists(destinationFile))
file.CopyTo(destinationFile);
}
catch (Exception ex)
{
//Ignore Exception
Debug.WriteLine(ex.Message);
}
}
}
}
}
And add the hack before your db migration script, I am using web api 2
so i did on RouteConfig.RegisterRoutes
NativeLibraryHack.DoHack();
using (KSDBContext db = new KSDBContext())
{
db.Database.Migrate();
}
You need to add the SQLite Extensions.
Go to Tools > Extensions and Updates
Go to Online, then search for SQLite.
Download SQLite for Windows Runtime
In your Windows Project, Add Reference and ensure you add the extension.
Also remove Microsoft.VCLibs from your references.
Try referencing Visual C++ 2015 Runtime for Universal Windows Platform Apps. That sorted it out for me.
Go to References
Add Reference
Extensions.
Check"Visual C++ 2015 Runtime for Universal Windows Platform Apps"
OK
I am developing a Windows 8.1 application in Visual Studio 2013 to create an Excel Sheet at run time. Visual Studio doesn't show any error, but when I run the app, there is a run time error that is :
Error 1 Missing compiler required member
'System.Runtime.InteropServices.LCIDConversionAttribute..ctor' D:\GS\Projects\excel\excel\CSC excel
Here is my CS code :
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
namespace excel
{
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook workbook = null;
Microsoft.Office.Interop.Excel.Workbooks workbooks = null;
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
workbooks = excelApp.Workbooks;
workbook = workbooks.Add(1);
worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Sheets[1];
excelApp.Visible = true;
worksheet.Cells[1, 1] = "Value1";
worksheet.Cells[1, 2] = "Value2";
worksheet.Cells[1, 3] = "Addition";
}
}
}
In the above code, there is no red line shown in VS-2013 for error.
I added references for Excel : Microsoft.Office.Interop.Excel
Does anyone have a solution ?
Sorry you can not automate office from a store app. I would look at using something like syncfusion's docio if you want to create a spread sheet
I'm new to .NET. I want to make a console application that converts a .pptx file into a .wmv.I've managed to do this using powerpoint interop.But i have some problems.First If i build the application and tranfer it to another computer i get an exception Error HRESULT E_FAIL has been returned for COM object(i have powerpoint in both PCs).If i run it on the one that i wrote it i everything works alright.But not for the first time.Meaning that when i start my pc and run it i'll get the same exception and the second time i'll try to run it will run properly.What could be the problem?iguess something with interop and powerpoint but i can't figure it out.
Ok here is the code:
using Microsoft.Office.Core;
using Microsoft.Office.Interop.PowerPoint;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using System.Runtime.InteropServices;
using System.IO;
using System;
namespace Microsoft.Office.Interop.PowerPoint
{
class Program
{
static void Main(string[] args)
{
string fileName = args[0];
string exportName = args[1];
string exportPath = args[2];
Microsoft.Office.Interop.PowerPoint.Application ppApp = new Microsoft.Office.Interop.PowerPoint.Application();
ppApp.Visible = MsoTriState.msoTrue;
ppApp.WindowState = PpWindowState.ppWindowMinimized;
Microsoft.Office.Interop.PowerPoint.Presentations oPresSet = ppApp.Presentations;
Microsoft.Office.Interop.PowerPoint._Presentation oPres = oPresSet.Open(fileName,
MsoTriState.msoFalse, MsoTriState.msoFalse,
MsoTriState.msoFalse);
try
{
oPres.CreateVideo(exportName);
oPres.SaveCopyAs(String.Format(exportPath, exportName),
PowerPoint.PpSaveAsFileType.ppSaveAsWMV,
MsoTriState.msoCTrue);
}
finally
{
ppApp.Quit();
}
}
}
}
_Presentation.CreateVideo doesn't create a video out of a powerpoint. It creates a video inside of a powerpoint. That's what the documentation says, anyway.
Try _Presentation.SaveAs and then use PpSaveAsFileType.ppSaveAsWMV for the file type.
I was wondering if it is possible to retreive from Windows a list of the applications installed INCLUDING their GUID and Upgrade GUID. I am having problems getting my upgrade to work for one of my programs, and need to check these values for the old version of the program. Thanks for the help!
You can use MSI api functions to enumerate all installed products and to query their properties. If you replace MsiGetProductInfo with MsiGetProductInfoEx you will be able to query additional information such as the installation context or user SID associated for an installation.
However, this does not allow you to enumerate the UpgradeCode. As far as I know MSI doesn't keep a record associating a ProductCode with an UpgradeCode; only the reverse mapping is available and you can enumerate the products related to an UpgradeCode using the MsiEnumRelatedProducts function.
Below you will find sample code which enumerates the installed or advertised products and their ProductCode using C#:
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
class Program
{
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
static extern Int32 MsiGetProductInfo(string product, string property,
[Out] StringBuilder valueBuf, ref Int32 len);
[DllImport("msi.dll", SetLastError = true)]
static extern int MsiEnumProducts(int iProductIndex,
StringBuilder lpProductBuf);
static void Main(string[] args)
{
StringBuilder sbProductCode = new StringBuilder(39);
int iIdx = 0;
while (MsiEnumProducts(iIdx++, sbProductCode) == 0)
{
Int32 productNameLen = 512;
StringBuilder sbProductName = new StringBuilder(productNameLen);
MsiGetProductInfo(sbProductCode.ToString(),
"ProductName", sbProductName, ref productNameLen);
Console.WriteLine("Product: {0}\t{1}", sbProductName, sbProductCode);
}
}
}
Update
If you still have the MSI installer of the previous version you can simply open the file using Orca and search for the UpgradeCode.