Merge pull request #48259 from kerend/patch-5

Added generate data section

Author: ktoliver

articles/data-explorer/data-connection-event-grid-csharp.md

@@ -90,4 +90,36 @@ await kustoManagementClient.DataConnections.CreateOrUpdateAsync(resourceGroupNam
 | consumerGroup | *$Default* | The consumer group of your Event Hub.|
 | location | *Central US* | The location of the data connection resource.|
 
+## Generate sample data
+
+Now that Azure Data Explorer and the storage account are connected, you can create sample data and upload it to the blob storage.
+
+This script creates a new container in your storage account, uploads an existing file (as a blob) to that container, and then lists the blobs in the container.
+
+```csharp
+var azureStorageAccountConnectionString=<storage_account_connection_string>;
+
+var containerName=<container_name>;
+var blobName=<blob_name>;
+var localFileName=<file_to_upload>;
+
+// Creating the container
+var azureStorageAccount = CloudStorageAccount.Parse(azureStorageAccountConnectionString);
+var blobClient = azureStorageAccount.CreateCloudBlobClient();
+var container = blobClient.GetContainerReference(containerName);
+container.CreateIfNotExists();
+
+// Set metadata and upload file to blob
+var blob = container.GetBlockBlobReference(blobName);
+blob.Metadata.Add("rawSizeBytes", "4096‬"); // the uncompressed size is 4096 bytes
+blob.Metadata.Add("kustoIngestionMappingReference", "mapping_v2‬");
+blob.UploadFromFile(localFileName);
+
+// List blobs
+var blobs = container.ListBlobs();
+```
+
+> [!NOTE]
+> Azure Data Explorer won't delete the blobs post ingestion. Retain the blobs for three to five days by using [Azure Blob storage lifecycle](https://docs.microsoft.com/azure/storage/blobs/storage-lifecycle-management-concepts?tabs=azure-portal) to manage blob deletion.
+
 [!INCLUDE [data-explorer-data-connection-clean-resources-csharp](../../includes/data-explorer-data-connection-clean-resources-csharp.md)]