Create a File/Directory Transferring App in C#

Reason :

One of a application I’m developing generates many PDF files daily. So we delete them normally once a week or another time. But it is difficult to search files which has generated in a particular date or date range and copy them or delete them to another place. We had to do it manually.


SO I created a small app to do it quickly. And I created a small app to show you how to create a example app to copy and delete directories/files from one place to another.

Steps :

1 .Create User Interface.

Here is the user interface I created..

2 drop folder open dialague

Image 1 : UI

We have to select folder path to the app. So I added two folder browse dialogues to select browse folders. You can select “Folder browser dialogue” control form tool box and drag and drop it into above form.

1 folder open dialague

Image 2 : Folder browse control

Then you can see those dialogue controls in bottom panel.

2. We have to Add function to “Source” button and “Destination” button to browse and select source folder path and destination folder path.

3 select directories with delete option

Image 3 : Source and Destination selecting

private void btnSource_Click(object sender, EventArgs e)
 DialogResult result = folderBrowserDialogSourceDir.ShowDialog();
 if (result == DialogResult.OK)
 textBox1.Text = this.folderBrowserDialogSourceDir.SelectedPath;


private void btnDestination_Click(object sender, EventArgs e)
 DialogResult result = folderBrowserDialogDestinationDir.ShowDialog();
 if (result == DialogResult.OK)
 textBox2.Text = this.folderBrowserDialogDestinationDir.SelectedPath;

Then when you click one of “Source” or “Destination” buttons, a browser window will popup and you can select any folder.

3 select directories

Image 4 : Folder browser dialague

3. User can check the “Delete after transferring”  check box if he want to delete files from source folder after copy them to destination.

4.Next Add functions to “Transfer files” button  to transfer files when Click it. So I use “Button click” event.

Here is the code in this event.

private void btnTransfer_Click(object sender, EventArgs e)
 string pathDestinationFolder = string.Format(@"{0}", textBox2.Text);

string pathSource = string.Format(@"{0}", textBox1.Text);

if (!string.IsNullOrWhiteSpace(pathSource) && !string.IsNullOrWhiteSpace(pathDestinationFolder))
 DateTime selectedDate = Convert.ToDateTime(dpEffiectiveDate.Text);
 DirectoryCopy(pathSource, pathDestinationFolder, true, selectedDate);

if (chkDelete.Checked)
 DeleteDirectories(pathSource, selectedDate);

lblDirectoriesFound.Text = foundDirectories.ToString();
 lblTransferedFilesCount.Text = createdDirectories.ToString();
 lblDeleted.Text = deletedDirectories.ToString();
 lblNotTransfered.Text = (foundDirectories - createdDirectories).ToString();
 else { MessageBox.Show("Source and destination is required", "Notification", MessageBoxButtons.OK, MessageBoxIcon.Information); }
 catch (Exception ex)
 MessageBox.Show(MethodBase.GetCurrentMethod() + " -> " + ex.Message);

I have extracted the function to copy directories and files to destination to a method “DirectoryCopy”.

private void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs, DateTime selectedDate)
 #region check exists and create is not exists
 // Get the sub directories for the specified directory.
 DirectoryInfo dir = new DirectoryInfo(sourceDirName);
 DirectoryInfo[] dirs = dir.GetDirectories();

if (!dir.Exists)
 throw new DirectoryNotFoundException(
 "Source directory does not exist or could not be found: "
 + sourceDirName);

// If the destination directory doesn't exist, create it.
 if (!Directory.Exists(destDirName))
 createdDirectories = createdDirectories + 1;
 listViewDirectories.Items.Add("Created Directory -> " + destDirName);

// Get the files in the directory and copy them to the new location.
 FileInfo[] files = dir.GetFiles();
 foreach (FileInfo file in files)
 string temppath = Path.Combine(destDirName, file.Name);
 if (File.Exists(temppath))
 { }
 file.CopyTo(temppath, false);
 listViewDirectories.Items.Add("Coppied file -> " + temppath);
 // If copying subdirectories, copy them and their contents to new location.
 if (copySubDirs)
 foreach (DirectoryInfo subdir in dirs)
 if (subdir.CreationTime.Date == selectedDate.Date)
 foundDirectories = foundDirectories + 1;
 string temppath = Path.Combine(destDirName, subdir.Name);
 DirectoryCopy(subdir.FullName, temppath, copySubDirs, selectedDate);
 catch (Exception ex)
 MessageBox.Show(MethodBase.GetCurrentMethod()+" -> "+ ex.Message);


“DirectoryCopy” Method is a recursive function.

Recursive function is a method which calls itself.

for more information go to =>Recursive function

7 use recursive function

Image 5 : Recursive function

The reason is some directories has one or more sub directories. So we have to go through all of them. So we have to loop through all directories in a same war. For that we have to use a Recursive function.

In “DirectoryCopy” method we have to use “FileInfo” class and “Directory“. SO we have to import System.IO namespace.

using System.IO;

In this method first we are checking directories in the source directory and we can watch information of source directory when debugging it.

DirectoryInfo dir = new DirectoryInfo(sourceDirName);

4 file info creation date

Image 6 : File info -> Quick watch

According to my requirement  I get folders and files by its creation date. So I have to use "FileInfo" class to get values.

Then we have to get sub directories in the folder. For that I use GetDirectories() method.

DirectoryInfo[] dirs = dir.GetDirectories();

when debugging the code we can check whether it has sub directories or not.

5 sub directories

Image 7 : Directory info

  • According to above "older is exists and if it is not existing, Then I'm reading a folder to copy files.
  • And then read File information of containing files of resource folder and if its date is my selected date, then copy those files to selected destination.
  • Then show copied files and created folders in the list-box.

After copy files, In  Transfer button click event, then I check the "chkDelete" check box and if it is checked, Then program delete folders from source folder.

DeleteDirectories() is a recursive function too.

private void DeleteDirectories(string pathSource, DateTime selectedDate)
 // Get the subdirectories for the specified directory.
 DirectoryInfo dirs = new DirectoryInfo(pathSource);
 DirectoryInfo[] dirList2 = dirs.GetDirectories();
 foreach (DirectoryInfo subdir in dirList2)
 string subDirname = subdir.FullName;
 if (subdir.CreationTime.Date == selectedDate.Date)
 deletedDirectories = deletedDirectories + 1;
 Directory.Delete(subDirname, true);
 listViewDirectories.Items.Add("Deleted Directory ->" + subDirname);
 DeleteDirectories(subDirname, selectedDate);
 catch (Exception ex)
 MessageBox.Show(MethodBase.GetCurrentMethod() + " -> " + ex.Message);

Then we can see copied files , created directories and deleted directories in the list box.

8 final info

Image 8 : Final Result

And another thing is if an error occurred, System will shows the error message with the Method name. To get the method name that I used ..


to use the MethodBase class we have to import ...

using System.Reflection;

To download the code go to Download.

Thanks !

How to Fix Error : SQL Server blocked access to procedure ‘sys.sp_OACreate’ of component ‘Ole Automation Procedures’ because this component is turned off as part of the security configuration for this server.

Problem :

When I was executing a stored procedure in a SQL Server 2005 Database from my C# application, it gave me an error and here is the result I saw when I was debug it..

ole auto error 2

Image 1 : Exception Message

SQL Server blocked access to procedure ‘sys.sp_OACreate’ of component ‘Ole Automation Procedures’ because this component is turned off as part of the security configuration for this server. A system administrator can enable the use of ‘Ole Automation Procedures’ by using sp_configure. For more information about enabling ‘Ole Automation Procedures’, see “Surface Area Configuration” in SQL Server Books Online.

And also I got below error messages with this error. I did not include all information of that message because it is too long..

SQL Server blocked access to procedure ‘sys.sp_OASetProperty’ of component ‘Ole Automation Procedures’ because this component is turned off as part of the security configuration for this server…
SQL Server blocked access to procedure ‘sys.sp_OAMethod’ of component ‘Ole Automation Procedures’ because this component is turned off as part of the security configuration for this server…
SQL Server blocked access to procedure ‘sys.sp_OADestroy’ of component ‘Ole Automation Procedures’ because this component is turned off as part of the security configuration for this server…

Then I searched solutions to fix this error and I found the solution.

Solution :

According to the message we have to enable the OLE Automation feature in Surface area configuration.

Here are steps to Enable the feature..

0 surface search

Image 2 : Search -> SQL Server Surface Area Configuration in Start menu

1 surface search

Image 3 : Select and click Surface Area Configuration for Features

Then you will enter to another form which contains features. Then Select “OLE Automation”

3 ole uttomation

Image 4 : Select OLE Automation


4 enable ole automation

Image 5 : Check the Enable OLE Automation Check box

Then Click “OK”, And Click “Apply”.

But when I click “OK”, I got another error that..

User does not have permission to perform this action.

You don’t have permission to RECONFIGURE statement.

5 enable error

Image 6 : Permission error

To fix this error, I had to give permission to the user..

6 set permissions

Image 7 : Give permission to the user

Then you can apply OLE Automation Feature..

Thanks !

Multiple substitutions specified in non-positional format; did you mean to add the formatted=”false” attribute?


My Xamarin project uses multiple languages and their translations are stored in Resource/.resx files. When I build the project in VS 2015 the android project not built successfully and it gave me an error…


Multiple substitutions specified in non-positional format;
did you mean to add the formatted=”false” attribute?
Mobility_App.Droid F:\Mobility_App.Droid\Resources\Values-fr\AppResources.xml

1 error

Image 1 : Error


I search the error and I found the issue occurred because some <string> tags consists of percentage(%) symbol.

2 reason

Image 2 : Reason % symbol


To fix this error we have to add a attribute “Formatted” to <string> tags which are consists of ‘%’ symbols. and Set “Formatted” attribute’s value to “false”.

3 solution

Image 3 : add <string formatted=”false”>

Now the issue has fixed and to ensure, then rebuild the project and you can see the solution is success.

4 success

Image 4 : Successfully Build

Thanks you !

Convert from Multilingual App Toolkit v3.0 to v4.0 and Fix Error “The Multilingual App Toolkit v4.0 is not compatible with previous versions of the toolkit”


I used Multilingual App Toolkit 3.0 for my Xamarin application in Visual Studio 2013 in Windows 8.1. Then I moved to a new machine with windows 10 and I installed Visual Studio 2015. Then I opened that Xamarin project in VS 2015 and when I was building the project it gave me an error.

mla error 1

Image 1 : Error


The imported project “C:\Program Files (x86)\MSBuild\Microsoft\Multilingual App Toolkit\Microsoft.Multilingual.ResxResources.targets” was not found.

Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.


F:\ProjectsBuddhima\mobile\Mobility\Mobility App\Mobility_App.csproj


Then I searched solutions for the error and according to the error, my new machine has not installed Multilingual App Toolkit.

Solution and Next steps

So I installed Multilingual App Toolkit v.4.0 which is compatible with Visual Studio 2015.

You can download from

mla error 2

Image 2 : Download Multilingual App Toolkit v4.0

Then the installer will download to your machine and you have to install it manually.

After I installed Multilingual App toolkit 4.0 I built the project again and I got another error.

Multilingual App Toolkit v4.0 upgrade blocked

The Multilingual App Toolkit v4.0 is not compatible with previous versions of the toolkit

mla error 7

Image 3 : Multilingual app Toolkit is blocked

According to above error message, I browsed the link in the

According to their technical references I will describe steps to convert from v3 to v4.

  1. First take a backup of existing project.
  2. Then we have to open the project which has Multilingual App toolkit v3.
  3. Then we have to disable app toolkit for projects. Go to tools and click “Disable Multilingual App Toolkit”.

    1 disable MLA tool kit

    Image 4 : Disable MLA Toolkit

  4. Then Copy current .xlf files to another location as a backup and delete all .xlf files in the project.

    2 remove xlf files

    Image 5 : Remove current XLF files

  5. Then rebuild the project.


Sometimes these steps are not enough to fully disable toe Multilingual App toolkit. So we have to disable it using config file manually.

Here are steps to remove them manually.

1.Right click the config file in the project and open it.
2.Search the label “MultilingualAppToolkit” in the config file.

12 multi languala app label

Image 6 : Delete property group from config file

3.Then delete above <PropertyGroup> which contains <MultilingualAppToolkitVirsion> tag.
4.Then we have to search again “MultilingualAppToolkit” label. And you will see <import> element.

13 delete multi languala import label

Image 7 : Delete <import> tag which contains MLA label

And also we have to delete the <Import> tag which contains “MultilingualAppToolkit”.


5.Then rebuild the project.

Now we have removed configurations of Multilingual App Toolkit from our project and we are ready to add v4.0 configurations.

Then we have to enable Multilingual App Toolkit from Toolbox.

1 Enable mltk

Image 8 : Enable MLA Toolkit

When we enable the Multilingual App Toolkit v4.0, we are ready to recycle Transitions from v3.0 project’s .xlf files.

Below I have added steps for that.

1.  Please check that the Multilingual App Toolkit v4.0 is enabled.

2. Then click on the project and select Multilingual App Toolkit=> Add transition languages

3 add multilangual languages

Image 9 : Multilingual App Toolkit ->  Add Transition languages

3. We can see language list in a window like below. Select languages that previously we have added to the project.

4 select languages

Image 10 : Select Languages

When click “OK”. New xlf files will be added to our project in a folder called “MultilingualResources”.  Below image shows it.

5 added xlf files

Image 11 : Added XLF files for selected languages

4. Then click on “MultilingualAppResources” folder and click .. Multilingual App Toolkit=> Import / recycling translations

6 import recycling transactions

Image 12 : Multilingual App Toolkit -> Import/Recycle Transitions

Then you will see below window.

7 import recycling transactions

Image 13 : Import Transition window

5. Click “Add button” and then select v3 xlf files from the location that we have copied from previous project.

8 select old v3 files

Image 14 : Select and Add  XML files in v3 project.

6. Then Select xlf files that we copied from the temporary location and Click “Open”. Then selected xlf files will be added to import resources form.

9 seletec xlf v3 files

Image 15 : Added XLF files

7. And an Important thing is we have to check the “Enable resource recycling” check box. And then click the import button.

10 enable recycling and import

Image 16 : Enable resource recycling and Import

8. Then rebuild the project.

11 success

Image 17 : Successfully Built project

Then we can see those .xlf files has been added to project and the project has built successfully.

Thank you !