I want to pass an image as parameter to my RDLC in dotnet core using enableexternalimage properity.
I found the answer and these the steps
//define the paramters Dictionary
Dictionary<string, string> Param = new Dictionary<string, string>();
//get the image
string ImagePath = $"{ this._environment.WebRootPath }\\car.png";
Bitmap bitMapIm = new System.Drawing.Bitmap(ImagePath);
Graphics graphicIm = Graphics.FromImage(bitMapIm);
//the value that will be sended to the rdlc
string ImageAsParamter = "";
//transform the image ToBase64String
using (var image = new Bitmap(ImagePath))
{
using (var ms = new MemoryStream())
{
image.Save(ms, ImageFormat.Png);
ImageAsParamter = Convert.ToBase64String(ms.ToArray());
}
}
//assign the parameter value
Param.Add("ImageDamages", ImageAsParamter);
//and finally add image to your rdlc with the following properties.
Image Parameter Properties
Related
i'm trying to create a pdf using PdfSharpCore for Xamarin Forms but I've run into some issues.
private void CreatePdf(object sender)
{
PdfDocument pdf = new PdfDocument();
PdfPage pdfPage = pdf.AddPage();
XGraphics graph = XGraphics.FromPdfPage(pdfPage);
XFont font = new XFont("Verdana", 20, XFontStyle.Bold);
graph.DrawString("This is my first PDF document", font, XBrushes.Black, new XRect(0, 0, pdfPage.Width.Point, pdfPage.Height.Point), XStringFormats.TopLeft);
string documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string localFilename = "test.pdf";
string localPath = Path.Combine(documentsPath, localFilename);
MemoryStream stream = new MemoryStream();
pdf.Save(stream, false);
byte[] bytes = stream.ToArray();
File.WriteAllBytes(localPath, bytes);
}
This is my function that generate the pdf and save it but when I press the button that invoke it, nothing happens.
I've already add the the permissions on the AndroidManifest.xml file like this:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I've tried using a library called Xamarin.Forms.SaveOpenPDFPackage. With this library you can
save and open your brand new pdf by doing this:
await CrossXamarinFormsSaveOpenPDFPackage.Current.SaveAndView("myFile1.pdf", "application/pdf", stream, PDFOpenContext.InApp);
It half works: it opens my new pdf but it doesn't save it.
Do you have any tip?
You could try to use Syncfusion.Xamarin.PDF.
Install from NuGet package first.
Creating a PDF document with table:
//Create a new PDF document.
PdfDocument doc = new PdfDocument();
//Add a page.
PdfPage page = doc.Pages.Add();
//Create a PdfGrid.
PdfGrid pdfGrid = new PdfGrid();
//Add values to list
List<object> data = new List<object>();
Object row1 = new { ID = "E01", Name = "Clay" };
Object row2 = new { ID = "E02", Name = "Thomas" };
Object row3 = new { ID = "E03", Name = "Andrew" };
Object row4 = new { ID = "E04", Name = "Paul" };
Object row5 = new { ID = "E05", Name = "Gray" };
data.Add(row1);
data.Add(row2);
data.Add(row3);
data.Add(row4);
data.Add(row5);
//Add list to IEnumerable
IEnumerable<object> dataTable = data;
//Assign data source.
pdfGrid.DataSource = dataTable;
//Draw grid to the page of PDF document.
pdfGrid.Draw(page, new PointF(10, 10));
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
doc.Save(stream);
//Close the document.
doc.Close(true);
//Save the stream as a file in the device and invoke it for viewing
Xamarin.Forms.DependencyService.Get<ISave>().SaveAndView("Output.pdf", "application/pdf", stream);
For more details about the ISave, you could get the whole code from Syncfusion official document.
I have following function which works fine when saving to disk. I am executing the code from an Azure function. Is there anyway to to write to a blob storage instead without saving to disk?
private void ExportDataSet(DataTable ds, string destination)
{
using (var workbook = SpreadsheetDocument.Create(destination, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
{
var workbookPart = workbook.AddWorkbookPart();
workbook.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook();
workbook.WorkbookPart.Workbook.Sheets = new DocumentFormat.OpenXml.Spreadsheet.Sheets();
var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>();
var sheetData = new DocumentFormat.OpenXml.Spreadsheet.SheetData();
sheetPart.Worksheet = new DocumentFormat.OpenXml.Spreadsheet.Worksheet(sheetData);
DocumentFormat.OpenXml.Spreadsheet.Sheets sheets = workbook.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>();
string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart);
uint sheetId = 1;
if (sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Count() > 0)
{
sheetId =
sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Select(s => s.SheetId.Value).Max() + 1;
}
DocumentFormat.OpenXml.Spreadsheet.Sheet sheet = new DocumentFormat.OpenXml.Spreadsheet.Sheet() { Id = relationshipId, SheetId = sheetId, Name = "Sites" };
sheets.Append(sheet);
DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
List<String> columns = new List<string>();
foreach (System.Data.DataColumn column in ds.Columns)
{
columns.Add(column.ColumnName);
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName);
headerRow.AppendChild(cell);
}
sheetData.AppendChild(headerRow);
foreach (System.Data.DataRow dsrow in ds.Rows)
{
DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
foreach (String col in columns)
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString()); //
newRow.AppendChild(cell);
}
sheetData.AppendChild(newRow);
}
}
}
I would expect you maybe could save to a Stream?
Save to stream is the solution if you don't like to save it to a disk(In azure function, you can save it to a disk in azure function kudu like D:\home etc.).
If you choose to save to stream, just a few changes to your code, like below:
private void ExportDataSet(DataTable ds, MemoryStream memoryStream)
{
using (var workbook = SpreadsheetDocument.Create(memoryStream, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
{
//your code logic here
}
//here, the code to upload to azure blob storage.
CloudStorageAccount storageAccount = new CloudStorageAccount(new StorageCredentials(accountName, accountKey), true);
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer cloudBlobContainer = cloudBlobClient.GetContainerReference("test1");
CloudBlockBlob myblob = cloudBlobContainer.GetBlockBlobReference("myexcel.xlsx");
//upload to blob storage
memoryStream.Position = 0;
myblob.UploadFromStream(memoryStream)
//or you can use Asnyc mehtod like myblob.UploadFromStreamAsync(memoryStream)
}
Note: if you're using the latest azure blob storage sdk Microsoft.Azure.Storage.Blob, version 9.4.0 or later, you can use either UploadFromStreamAsync or UploadFromStream method in azure function v2.
I am dynamically generating images through C# , and when the page loads I want the user to be able to view more than one image at a time inside a flipview, but unfortunately when I am adding the images inside the flipview, only one image is visible at a time, and user has to scroll to watch another image. If I use gridview that solves my problem , but i don't want the gridview style scrollbar. Here is my code.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new
Uri(#"http://indiamp3.com/music/index.php"));
HttpWebResponse response = (HttpWebResponse)request.GetResponseAsync().Result;
StreamReader sr = new StreamReader(response.GetResponseStream());
string stream = sr.ReadToEnd();
string reader = stream.Split(new string[] { "IndiaMp3.Com - Download & play free
Indian hindi mp3 songs", "Random Albums" },
StringSplitOptions.None)[1];
List<string> readerLink = new List<string>();
readerLink.AddRange(reader.Split(new string[] { "<img src='", ".jpg'" },
StringSplitOptions.None));
readerLink.RemoveAll(s => s.Contains("audio") == false);
List<string> songList = new List<string>();
List<string> imageLink = new List<string>();
imageLink.AddRange(reader.Split(new string[] { "href='", "'>" },
StringSplitOptions.None));
imageLink.RemoveAll(s => s.Contains("action=") == false);
imageLink = imageLink.Distinct().ToList();
List<Image> images = new List<Image>();
foreach (string link in readerLink)
{
songList.Add(link.Split('/')[3]);
// imageLink.Add("http://indiamp3.com/music/" + link + ".jpg");
image = new Image();
image.Source = new BitmapImage(new Uri(#"http://indiamp3.com/music/" +
link + ".jpg", UriKind.Absolute));
image.Stretch = Stretch.None;
image.HorizontalAlignment = HorizontalAlignment.Left;
image.VerticalAlignment = VerticalAlignment.Center;
images.Add(image);
fvLatest.Items.Add(image); // fvLatest is the name of the flipview
}
I've searched for the same and the only answer I found is this:
I do not think FlipView is design for that, if you want to display multipe flip view, you could try to use other controls to render your content, and navigate by code.
best regards,
Sheldon _Xiao[MSFT]
# MSDN
I've verified using System.Text.Encoding.ASCII.GetString(ms.ToArray)); that my memorystream has the expected data.
However using the LinqToCSV nuget library will not generate my csv file. I get no errors or exceptions thrown. I just get an empty file when I'm prompted to open the file.
Here is my Action Method
public FileStreamResult Export(){
var results = _service.GetProperties().Take(3);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
System.IO.TextWriter txt = new System.IO.StreamWriter(ms);
CsvFileDescription inputFileDescription = new CsvFileDescription{
SeparatorChar =',',
FirstLineHasColumnNames = true
}
;
CsvContext csv = new CsvContext();
csv.Write(results,txt,inputFileDescription);
return File(ms , "application/x-excel");
}
I find it interesting, if I change the return type to contentResult, and the return method to Content() and pass it System.Text.Encoding.ASCII.GetString(ms.ToArray)); I do get a browser window showing my data.
Make sure you reset stream position to 0. Also make sure you flush your StreamWriter before that.
Calling the Web API method to return CVS file from JavaScript.
public HttpResponseMessage Bidreport([FromBody]int formData).....
Fill in your IEnumerable<YourObject>query = from LINQ query
....
This is how to return it:
using (var ms = new MemoryStream())
{
using (TextWriter txt = new StreamWriter(ms))
{
var cc = new CsvContext();
cc.Write(query, txt, outputFileDescription);
txt.Flush();
ms.Position = 0;
var fileData = Encoding.ASCII.GetString(ms.ToArray());
var result = new HttpResponseMessage(HttpStatusCode.OK) {Content = new StringContent(fileData)};
result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/x-excel");
return result;
}
}
In Windows Phone 7 how can I save a BitmapImage to local storage? I need to save the image for caching and reload if it is requested again in the next few days.
If you save the file into IsolatedStorage you can set a relative path to view it from there.
Here's a quick example saving a file that was included in the XAP (as a resource) into Isolated Storage.
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isoStore.FileExists(fileName)
{
var sr = Application.GetResourceStream(new Uri(fileName, UriKind.Relative));
using (var br = new BinaryReader(sr.Stream))
{
byte[] data = br.ReadBytes((int)sr.Stream.Length);
string strBaseDir = string.Empty;
const string DelimStr = "/";
char[] delimiter = DelimStr.ToCharArray();
string[] dirsPath = fileName.Split(delimiter);
// Recreate the directory structure
for (int i = 0; i < dirsPath.Length - 1; i++)
{
strBaseDir = Path.Combine(strBaseDir, dirsPath[i]);
isoStore.CreateDirectory(strBaseDir);
}
using (BinaryWriter bw = new BinaryWriter(isoStore.CreateFile(fileName)))
{
bw.Write(data);
}
}
}
}
You may also be interested in the image caching converters created by Ben Gracewood and Peter Nowaks. They both show saving images into isolated storage and loading them from there.
Another approach I've used is to pass the stream you retrieve for the image in your xap straight into an isolated storage file. Not a lot of moving parts.
using (var isoStore = IsolatedStorageFile.GetUserStoreForApplication()) {
var bi = new BitmapImage();
bi.SetSource(picStreamFromXap);
var wb = new WriteableBitmap(bi);
using (var isoFileStream = isoStore.CreateFile("pic.jpg"))
Extensions.SaveJpeg(wb, isoFileStream, wb.PixelWidth, wb.PixelHeight, 0, 100);
}