Loading and Saving Excel document in Google Cloud Storage
23 Jul 202518 minutes to read
Prerequisites
-
Google cloud storage is required.
-
Service account is required.
-
Service account key is required.
Loading Excel document from Google Cloud
Steps to load an Excel document from Google Cloud Storage.
Step 1: Create a new ASP.NET Core Web Application (Model-View-Controller).
Step 2: Name the project.
Step 3: Install the following Nuget packages in your application from NuGet.org.
Step 4: Add a new button in the Index.cshtml as shown below.
@{Html.BeginForm("EditDocument", "Home", FormMethod.Get);
{
<div>
<input type="submit" value="Download Document" style="width:170px;height:27px" />
</div>
}
Html.EndForm();
}Step 5: Include the following namespaces in HomeController.cs.
using Syncfusion.XlsIO;
using Google.Cloud.Storage.V1;
using Google.Apis.Auth.OAuth2;Step 6: Include the below code snippet in HomeController.cs to load an Excel document from Google Cloud Storage.
//Your bucket name
string bucketName = "Your_bucket_name";
//Your service account key path
string keyPath = "Your_service_account_key_path";
//Name of the file to download from the Google Cloud Storage
string fileName = "Your_file_name";
//Create Google Credential from the service account key file
GoogleCredential credential = GoogleCredential.FromFile(keyPath);
//Instantiates a storage client to interact with Google Cloud Storage
StorageClient storageClient = StorageClient.Create(credential);
//Download a file from Google Cloud Storage
using (MemoryStream memoryStream = new MemoryStream())
{
await storageClient.DownloadObjectAsync(bucketName, fileName, memoryStream);
memoryStream.Position = 0;
//Edit the downloaded Excel file
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Excel2016;
//Loads the downloaded document
IWorkbook workbook = application.Workbooks.Open(memoryStream);
IWorksheet worksheet = workbook.Worksheets[0];
worksheet.Range["A3"].Text = "Hello world";
//Saving the Excel to the MemoryStream
MemoryStream outputStream = new MemoryStream();
workbook.SaveAs(outputStream);
//Set the position as '0'.
outputStream.Position = 0;
//Download the Excel file in the browser
FileStreamResult fileStreamResult = new FileStreamResult(outputStream, "application/excel");
fileStreamResult.FileDownloadName = "EditExcel.xlsx";
return fileStreamResult;
}
}A complete working example of how to load an Excel document from Google Cloud Storage in ASP.NET Core is present on this GitHub page.
By executing the program, you will get the Excel document as follows.
Saving Excel document to Google Cloud
Steps to save an Excel document to Google Cloud Storage.
Step 1: Create a new ASP.NET Core Web Application (Model-View-Controller).
Step 2: Name the project.
Step 3: Install the following Nuget packages in your application from NuGet.org.
Step 4: Add a new button in the Index.cshtml as shown below.
@{Html.BeginForm("CreateDocument", "Home", FormMethod.Get);
{
<div>
<input type="submit" value="Upload Document" style="width:150px;height:27px" />
</div>
}
Html.EndForm();
}Step 5: Include the following namespaces in HomeController.cs.
using Syncfusion.XlsIO;
using Syncfusion.Drawing;
using Google.Cloud.Storage.V1;
using Google.Apis.Auth.OAuth2;Step 6: Include the below code snippet in HomeController.cs to Save an Excel document to Google Cloud Storage.
//Create an instance of ExcelEngine
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Xlsx;
//Create a workbook
IWorkbook workbook = application.Workbooks.Create(1);
IWorksheet worksheet = workbook.Worksheets[0];
//Adding a picture
FileStream imageStream = new FileStream("AdventureCycles-Logo.png", FileMode.Open, FileAccess.Read);
IPictureShape shape = worksheet.Pictures.AddPicture(1, 1, imageStream, 20, 20);
//Disable gridlines in the worksheet
worksheet.IsGridLinesVisible = false;
//Enter values to the cells from A3 to A5
worksheet.Range["A3"].Text = "46036 Michigan Ave";
worksheet.Range["A4"].Text = "Canton, USA";
worksheet.Range["A5"].Text = "Phone: +1 231-231-2310";
//Make the text bold
worksheet.Range["A3:A5"].CellStyle.Font.Bold = true;
//Merge cells
worksheet.Range["D1:E1"].Merge();
//Enter text to the cell D1 and apply formatting.
worksheet.Range["D1"].Text = "INVOICE";
worksheet.Range["D1"].CellStyle.Font.Bold = true;
worksheet.Range["D1"].CellStyle.Font.RGBColor = Color.FromArgb(42, 118, 189);
worksheet.Range["D1"].CellStyle.Font.Size = 35;
//Apply alignment in the cell D1
worksheet.Range["D1"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignRight;
worksheet.Range["D1"].CellStyle.VerticalAlignment = ExcelVAlign.VAlignTop;
//Enter values to the cells from D5 to E8
worksheet.Range["D5"].Text = "INVOICE#";
worksheet.Range["E5"].Text = "DATE";
worksheet.Range["D6"].Number = 1028;
worksheet.SetValue(6, 5, "12/31/2018");
worksheet.Range["D7"].Text = "CUSTOMER ID";
worksheet.Range["E7"].Text = "TERMS";
worksheet.Range["D8"].Number = 564;
worksheet.Range["E8"].Text = "Due Upon Receipt";
//Apply RGB backcolor to the cells from D5 to E8
worksheet.Range["D5:E5"].CellStyle.Color = Color.FromArgb(42, 118, 189);
worksheet.Range["D7:E7"].CellStyle.Color = Color.FromArgb(42, 118, 189);
//Apply known colors to the text in cells D5 to E8
worksheet.Range["D5:E5"].CellStyle.Font.Color = ExcelKnownColors.White;
worksheet.Range["D7:E7"].CellStyle.Font.Color = ExcelKnownColors.White;
//Make the text as bold from D5 to E8
worksheet.Range["D5:E8"].CellStyle.Font.Bold = true;
//Apply alignment to the cells from D5 to E8
worksheet.Range["D5:E8"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignCenter;
worksheet.Range["D5:E5"].CellStyle.VerticalAlignment = ExcelVAlign.VAlignCenter;
worksheet.Range["D7:E7"].CellStyle.VerticalAlignment = ExcelVAlign.VAlignCenter;
worksheet.Range["D6:E6"].CellStyle.VerticalAlignment = ExcelVAlign.VAlignTop;
//Enter value and applying formatting in the cell A7
worksheet.Range["A7"].Text = " BILL TO";
worksheet.Range["A7"].CellStyle.Color = Color.FromArgb(42, 118, 189);
worksheet.Range["A7"].CellStyle.Font.Bold = true;
worksheet.Range["A7"].CellStyle.Font.Color = ExcelKnownColors.White;
//Apply alignment
worksheet.Range["A7"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignLeft;
worksheet.Range["A7"].CellStyle.VerticalAlignment = ExcelVAlign.VAlignCenter;
//Enter values in the cells A8 to A12
worksheet.Range["A8"].Text = "Steyn";
worksheet.Range["A9"].Text = "Great Lakes Food Market";
worksheet.Range["A10"].Text = "20 Whitehall Rd";
worksheet.Range["A11"].Text = "North Muskegon,USA";
worksheet.Range["A12"].Text = "+1 231-654-0000";
//Create a Hyperlink for e-mail in the cell A13
IHyperLink hyperlink = worksheet.HyperLinks.Add(worksheet.Range["A13"]);
hyperlink.Type = ExcelHyperLinkType.Url;
hyperlink.Address = "[email protected]";
hyperlink.ScreenTip = "Send Mail";
//Merge column A and B from row 15 to 22
worksheet.Range["A15:B15"].Merge();
worksheet.Range["A16:B16"].Merge();
worksheet.Range["A17:B17"].Merge();
worksheet.Range["A18:B18"].Merge();
worksheet.Range["A19:B19"].Merge();
worksheet.Range["A20:B20"].Merge();
worksheet.Range["A21:B21"].Merge();
worksheet.Range["A22:B22"].Merge();
//Enter details of products and prices
worksheet.Range["A15"].Text = " DESCRIPTION";
worksheet.Range["C15"].Text = "QTY";
worksheet.Range["D15"].Text = "UNIT PRICE";
worksheet.Range["E15"].Text = "AMOUNT";
worksheet.Range["A16"].Text = "Cabrales Cheese";
worksheet.Range["A17"].Text = "Chocos";
worksheet.Range["A18"].Text = "Pasta";
worksheet.Range["A19"].Text = "Cereals";
worksheet.Range["A20"].Text = "Ice Cream";
worksheet.Range["C16"].Number = 3;
worksheet.Range["C17"].Number = 2;
worksheet.Range["C18"].Number = 1;
worksheet.Range["C19"].Number = 4;
worksheet.Range["C20"].Number = 3;
worksheet.Range["D16"].Number = 21;
worksheet.Range["D17"].Number = 54;
worksheet.Range["D18"].Number = 10;
worksheet.Range["D19"].Number = 20;
worksheet.Range["D20"].Number = 30;
worksheet.Range["D23"].Text = "Total";
//Apply number format
worksheet.Range["D16:E22"].NumberFormat = "$.00";
worksheet.Range["E23"].NumberFormat = "$.00";
//Apply incremental formula for column Amount by multiplying Qty and UnitPrice
application.EnableIncrementalFormula = true;
worksheet.Range["E16:E20"].Formula = "=C16*D16";
//Formula for Sum the total
worksheet.Range["E23"].Formula = "=SUM(E16:E22)";
//Apply borders
worksheet.Range["A16:E22"].CellStyle.Borders[ExcelBordersIndex.EdgeTop].LineStyle = ExcelLineStyle.Thin;
worksheet.Range["A16:E22"].CellStyle.Borders[ExcelBordersIndex.EdgeBottom].LineStyle = ExcelLineStyle.Thin;
worksheet.Range["A16:E22"].CellStyle.Borders[ExcelBordersIndex.EdgeTop].Color = ExcelKnownColors.Grey_25_percent;
worksheet.Range["A16:E22"].CellStyle.Borders[ExcelBordersIndex.EdgeBottom].Color = ExcelKnownColors.Grey_25_percent;
worksheet.Range["A23:E23"].CellStyle.Borders[ExcelBordersIndex.EdgeTop].LineStyle = ExcelLineStyle.Thin;
worksheet.Range["A23:E23"].CellStyle.Borders[ExcelBordersIndex.EdgeBottom].LineStyle = ExcelLineStyle.Thin;
worksheet.Range["A23:E23"].CellStyle.Borders[ExcelBordersIndex.EdgeTop].Color = ExcelKnownColors.Black;
worksheet.Range["A23:E23"].CellStyle.Borders[ExcelBordersIndex.EdgeBottom].Color = ExcelKnownColors.Black;
//Apply font setting for cells with product details
worksheet.Range["A3:E23"].CellStyle.Font.FontName = "Arial";
worksheet.Range["A3:E23"].CellStyle.Font.Size = 10;
worksheet.Range["A15:E15"].CellStyle.Font.Color = ExcelKnownColors.White;
worksheet.Range["A15:E15"].CellStyle.Font.Bold = true;
worksheet.Range["D23:E23"].CellStyle.Font.Bold = true;
//Apply cell color
worksheet.Range["A15:E15"].CellStyle.Color = Color.FromArgb(42, 118, 189);
//Apply alignment to cells with product details
worksheet.Range["A15"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignLeft;
worksheet.Range["C15:C22"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignCenter;
worksheet.Range["D15:E15"].CellStyle.HorizontalAlignment = ExcelHAlign.HAlignCenter;
//Apply row height and column width to look good
worksheet.Range["A1"].ColumnWidth = 36;
worksheet.Range["B1"].ColumnWidth = 11;
worksheet.Range["C1"].ColumnWidth = 8;
worksheet.Range["D1:E1"].ColumnWidth = 18;
worksheet.Range["A1"].RowHeight = 47;
worksheet.Range["A2"].RowHeight = 15;
worksheet.Range["A3:A4"].RowHeight = 15;
worksheet.Range["A5"].RowHeight = 18;
worksheet.Range["A6"].RowHeight = 29;
worksheet.Range["A7"].RowHeight = 18;
worksheet.Range["A8"].RowHeight = 15;
worksheet.Range["A9:A14"].RowHeight = 15;
worksheet.Range["A15:A23"].RowHeight = 18;
//Saving the Excel to the MemoryStream
MemoryStream stream = new MemoryStream();
workbook.SaveAs(stream);
//Set the position as '0'.
stream.Position = 0;
//Your bucket name
string bucketName = "Your_bucket_name";
//Your service account key path
string keyPath = "Your_service_account_key_path";
//Name of the file to upload to Google Cloud Storage
string fileName = "Your_file_name";
//Create Google Credential from the service account key file
GoogleCredential credential = GoogleCredential.FromFile(keyPath);
//Instantiates a storage client to interact with Google Cloud Storage
StorageClient storageClient = StorageClient.Create(credential);
//Uploads a file to Google Cloud Storage
storageClient.UploadObject(bucketName, fileName, null, stream);
return Ok($"Uploaded {fileName} to {bucketName}.");
}A complete working example of how to save an Excel document to Google Cloud Storage in ASP.NET Core is present on this GitHub page.
By executing the program, you will get the Excel document as follows.
Click here to explore the rich set of Syncfusion® Excel library (XlsIO) features.
An online sample link to create an Excel document in ASP.NET Core.