Created README.md

MainForm.ps1

@@ -60,14 +60,6 @@ $btnConvert.Size = New-Object System.Drawing.Size(120, 30)
 $btnConvert.Text = "Convert to XLSX"
 $form.Controls.Add($btnConvert)
 
-# Create Checkbox for Recursive Listing
-$chkRecursive = New-Object System.Windows.Forms.CheckBox
-$chkRecursive.Location = New-Object System.Drawing.Point(20, 205)
-$chkRecursive.Size = New-Object System.Drawing.Size(150, 20)
-$chkRecursive.Text = "List Recursively"
-$chkRecursive.Checked = $true  # Default to recursive
-$form.Controls.Add($chkRecursive)
-
 # Create Status TextBox (Top Right)
 $txtStatus = New-Object System.Windows.Forms.TextBox
 $txtStatus.Location = New-Object System.Drawing.Point(450, 20)  # Top Right Corner
@@ -121,8 +113,7 @@ $form.Controls.AddRange(@(
     $txtFolder,
     $btnBrowse,
     $btnSaveConfig,
-    $btnConnect,
-    $chkRecursive # Add the checkbox to the form
+    $btnConnect
 ))
 
 # Load configuration
@@ -158,7 +149,6 @@ $btnBrowse.Add_Click({
 # Store the DataGridView and txtStatus in script scope
 $script:dataGridView = $dataGridView
 $script:txtStatus = $txtStatus
-$script:chkRecursive = $chkRecursive
 
 # Show form
 $form.Add_Shown({ $form.Activate() })

README.md

@@ -0,0 +1,85 @@
+# SharePoint XLS to XLSX Converter
+
+This tool allows you to convert legacy `.xls` files stored in SharePoint to the modern `.xlsx` format. The converter maintains the original folder structure and automatically uploads the converted files back to SharePoint.
+
+## Installation Instructions
+
+### Step 1: Install PowerShell 7.5
+
+1. Visit the [PowerShell GitHub releases page](https://github.com/PowerShell/PowerShell/releases)
+2. Download the appropriate installer for your system (e.g., `PowerShell-7.5.0-win-x64.msi` for 64-bit Windows)
+3. Run the installer and follow the on-screen instructions
+4. Verify the installation by opening PowerShell 7 from the Start menu
+
+### Step 2: Install Required Dependencies
+
+1. Download the XLS to XLSX Converter files to a folder on your computer
+2. Right-click on PowerShell 7 in the Start menu and select "Run as administrator"
+3. Navigate to the folder containing the converter files:
+   ```
+   cd C:\path\to\XLS_to_XLSX
+   ```
+4. Run the dependency installer script:
+   ```
+   .\Install-Dependencies.ps1
+   ```
+5. The script will install the required Microsoft Graph modules and verify that Excel is installed
+
+### Step 3: Configure Microsoft Graph Authentication
+
+1. The first time you run the application, you'll need to authenticate with Microsoft Graph
+2. Follow the prompts to sign in with your Microsoft 365 account that has access to the SharePoint site
+
+## Operating the Program
+
+### Starting the Application
+
+1. Open PowerShell 7 as administrator
+2. Navigate to the application folder:
+   ```
+   cd C:\path\to\XLS_to_XLSX
+   ```
+3. Run the application in STA mode:
+   ```
+   pwsh -STA -File .\MainForm.ps1
+   ```
+
+### Using the Application
+
+1. **Configure SharePoint Settings**:
+   - Enter your SharePoint site URL (e.g., `https://yourcompany.sharepoint.com/sites/yoursite`)
+   - Enter the document library name (e.g., `Shared Documents` or `Documents`)
+   - Click "Save Config" to save these settings for future use
+
+2. **Connect to SharePoint**:
+   - Click the "Connect" button to authenticate with SharePoint
+   - Follow any authentication prompts that appear
+
+3. **Select a Folder** (Optional):
+   - Click "Browse" to navigate to a specific folder in SharePoint
+   - If no folder is selected, the application will work with files in the root of the document library
+
+4. **List XLS Files**:
+   - Click "List XLS Files" to find all `.xls` files in the selected location
+   - The files will be displayed in the grid at the bottom of the window
+
+5. **Convert Files**:
+   - Click "Convert to XLSX" to begin the conversion process
+   - The application will:
+     - Download each `.xls` file
+     - Convert it to `.xlsx` format using Excel
+     - Upload the converted file back to the same location in SharePoint
+   - Progress and status messages will appear in the text box on the right
+
+## Troubleshooting
+
+- **Authentication Issues**: Ensure you have the correct permissions to access the SharePoint site
+- **Excel Errors**: Make sure Microsoft Excel is installed and properly licensed
+- **File Access Errors**: Check that you have permission to read and write to the SharePoint libraries
+- **Conversion Failures**: Some very old or complex Excel files may not convert properly
+
+## Notes
+
+- The application requires an active internet connection
+- Large files may take longer to download, convert, and upload
+- The original `.xls` files remain unchanged in SharePoint 

SharePointFunctions.ps1

@@ -259,24 +259,12 @@ function List-XlsFiles {
             #$items = Get-MgDriveItemChild -DriveId $drive.Id -DriveItemId $folderItem.id
             
             # Call the recursive function to process files and subfolders
-            if ($script:chkRecursive.Checked) {
-                $script:txtStatus.Text += "Listing files recursively...`n"
-                $fileList = Get-XlsFilesRecursive -DriveId $drive.Id -DriveItemId $folderItem.id
-            } else {
-                 $script:txtStatus.Text += "Listing files in current folder only...`n"
+            $script:txtStatus.Text += "Listing files in current folder...`n"
             $fileList = Get-XlsFilesCurrentFolder -DriveId $drive.Id -DriveItemId $folderItem.id
-            }
         } else {
-            $script:txtStatus.Text += "Searching in root folder`n"
-            
-             if ($script:chkRecursive.Checked) {
-                $script:txtStatus.Text += "Listing files recursively...`n"
-                $fileList = Get-XlsFilesRecursive -DriveId $drive.Id -DriveItemId $root.Id
-            } else {
-                $script:txtStatus.Text += "Listing files in current folder only...`n"
+            $script:txtStatus.Text += "Searching in root folder...`n"
             $fileList = Get-XlsFilesCurrentFolder -DriveId $drive.Id -DriveItemId $root.Id
         }
-        }
 
          if ($fileList.Count -gt 0) {
             $script:txtStatus.Text += "Saving file list...`n"
@@ -299,55 +287,6 @@ function List-XlsFiles {
     }
 }
 
-# Recursive function to get XLS files from a folder and its subfolders
-function Get-XlsFilesRecursive {
-    param (
-        [string]$DriveId,
-        [string]$DriveItemId
-    )
-    
-    $allFiles = @()
-    
-    # Check if DriveId or DriveItemId is null or empty
-    if ([string]::IsNullOrEmpty($DriveId)) {
-        $script:txtStatus.Text += "Error: DriveId is null or empty`n"
-        return $allFiles
-    }
-    if ([string]::IsNullOrEmpty($DriveItemId)) {
-        $script:txtStatus.Text += "Error: DriveItemId is null or empty`n"
-        return $allFiles
-    }
-    
-    # Get items in the current folder
-    try {
-        $items = Get-MgDriveItemChild -DriveId $DriveId -DriveItemId $DriveItemId -ErrorAction Stop
-    }
-    catch {
-        $script:txtStatus.Text += "Error getting items: $($_.Exception.Message)`n"
-        return $allFiles
-    }
-    
-    foreach ($item in $items) {
-        $script:txtStatus.Text += "Checking item: $($item.Name)`n"
-        
-        # If it's a folder, recurse into it
-        if ($item.Folder -and $item.Folder.ChildCount -ne $null) { # Check if it's a folder AND has children
-            $script:txtStatus.Text += "Found folder: $($item.Name), recursing...`n"
-            $allFiles += Get-XlsFilesRecursive -DriveId $DriveId -DriveItemId $item.Id
-        }
-        # If it's an Excel file, add it to the list
-        elseif ($item.Name -like "*.xls" -or $item.Name -like "*.xlsx" -or $item.Name -like "*.xlsm") {
-            $script:txtStatus.Text += "Found XLS file: $($item.Name)`n"
-            $allFiles += [PSCustomObject]@{
-                OriginalPath = $item.WebUrl
-                OriginalFileName = $item.Name
-            }
-        }
-    }
-    
-    return $allFiles
-}
-
 # Function to get XLS files from only the current folder
 function Get-XlsFilesCurrentFolder {
     param (
@@ -379,8 +318,8 @@ function Get-XlsFilesCurrentFolder {
     foreach ($item in $items) {
         $script:txtStatus.Text += "Checking item: $($item.Name)`n"
         
-        # If it's an Excel file, add it to the list
-        if ($item.Name -like "*.xls" -or $item.Name -like "*.xlsx" -or $item.Name -like "*.xlsm") {
+        # If it's an Excel file, add it to the list - only .xls files, not .xlsx
+        if ($item.Name -like "*.xls" -and -not ($item.Name -like "*.xlsx")) {
             $script:txtStatus.Text += "Found XLS file: $($item.Name)`n"
             $allFiles += [PSCustomObject]@{
                 OriginalPath = $item.WebUrl