Dynamically Create Rows And Columns According To Number Of Questions

Thread ID:	Created:	Updated:	Platform:	Replies:
142895	Feb 25,2019 11:00 AM UTC	Feb 26,2019 01:15 PM UTC	Xamarin.Forms	1

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Tags: PDF

Nouman Khalid

Asked On February 25, 2019 11:00 AM UTC

Hello i am creating a simple math application in which we generate simple maths questions and then save these questions in PDF. We are using your pdf services for achieving this functionality. Now Questions are generated successfully in pdf but there are somple problems we are using your table system in this we want to add dynamically rows and columns in pdf according to questions and then show these different questions in a grid form in pdf here is my code thanks

public void GenerateTable()

{

using (PdfDocument document = new PdfDocument())

{

//Add a page

PdfPage page = document.Pages.Add();

//Acquire pages graphics

PdfGraphics graphics = page.Graphics;

PdfStringFormat CenterHeader = new PdfStringFormat(PdfTextAlignment.Center);

PdfFont font = new PdfStandardFont(PdfFontFamily.TimesRoman, 20);

PdfColor color = new PdfColor(240, 248, 255);

PdfSolidBrush brush = new PdfSolidBrush(color);

PdfPen borderPen = new PdfPen(PdfBrushes.LightGray);

borderPen.Width = 2;

//Default Style

PdfCellStyle defStyle = new PdfCellStyle();

defStyle.Font = font;

defStyle.BackgroundBrush = PdfBrushes.WhiteSmoke;

defStyle.BorderPen = borderPen;

defStyle.StringFormat = CenterHeader;

//Alternative Style

PdfCellStyle altStyle = new PdfCellStyle();

altStyle.Font = font;

altStyle.BackgroundBrush = brush;

altStyle.BorderPen = borderPen;

//Header Style

PdfCellStyle headerStyle = new PdfCellStyle(font, PdfBrushes.White, PdfPens.DarkBlue);

brush = new PdfSolidBrush(new PdfColor(0,0,0));

headerStyle.BackgroundBrush = brush;

headerStyle.StringFormat = CenterHeader;

//Declare a PdfLightTable

PdfLightTable pdfLightTable = new PdfLightTable();

PdfMargins margins = new PdfMargins();

PdfLightTableLayoutFormat pdflayout = new PdfLightTableLayoutFormat();

//Set the Data source as direct

pdfLightTable.DataSourceType = PdfLightTableDataSourceType.TableDirect;

// pdfLightTable.Style.AlternateStyle = defStyle;

//Create columns

for(int i=0;i<4;i++)

{

pdfLightTable.Columns.Add(new PdfColumn("Questions"));

}

pdfLightTable.Style.CellPadding = 10;

pdfLightTable.Style.ShowHeader = false;

for (int i = 0; i < NumberOfQuestion; i++)

{

LeftOperant = LeftOperantList[i];

RightOperant = RightOperantList[i];

result = Calculation(LeftOperant, Operator, RightOperant);

QuestionsList.Add(" " + LeftOperant + "\n" + Operator + " " + RightOperant + "\n ------------ \n" + result + "\n ------------ \n");

// pdfLightTable.Rows.Add(new object[] { " "+LeftOperant+"\n"+ Operator+" "+ RightOperant + "\n ------------ \n" + result + "\n ------------ \n", "Noman","Waheed","Developers"});

}

foreach (var item in QuestionsList)

{

pdfLightTable.Rows.Add(new object[] { item,"","",""});

}

//Draw the PdfLightTable

// pdfLightTable.Draw(page, new PointF(50, 50));

pdfLightTable.Style.AlternateStyle = defStyle;

pdfLightTable.Style.DefaultStyle = defStyle;

pdfLightTable.Style.HeaderStyle = headerStyle;

pdfLightTable.Draw(page, PointF.Empty);

//pdfLightTable.Draw(page, 50, 50, 300, pdflayout);

//Save the document

MemoryStream stream = new MemoryStream();

document.Save(stream);

document.Close(true);

//Save the stream as a file in the device and invoke it for viewing

Xamarin.Forms.DependencyService.Get<ISave>().SaveAndView("PDFTable.pdf", "application / pdf", stream);

}

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Surya Kumar [Syncfusion]

Replied On February 26, 2019 01:15 PM UTC

Hi Nouman,

Greetings from Syncfusion.

You can dynamically create a data source using "IEnumerable<object>" and set that collection as data source to PdfLighTable using the code snippet below:

using (PdfDocument document = new PdfDocument())
{
//Add a page
PdfPage page = document.Pages.Add();

//Acquire pages graphics
PdfGraphics graphics = page.Graphics;

//Declare a PdfLightTable
PdfLightTable pdfLightTable = new PdfLightTable();

//Add values to list
List<object> Questions = new List<object>();

for (int i = 0; i < NumberOfQuestion; i++)
{
LeftOperant = LeftOperantList[i];
RightOperant = RightOperantList[i];
result = Calculation(LeftOperant, Operator, RightOperant);
object row = new { Value1 = LeftOperant, Value2 = Operator, Value3 = RightOperant, Value4 = result };
Questions.Add(row);

}
//Add list to IEnumerable
IEnumerable<object> table = Questions;

//Assign data source.
pdfLightTable.DataSource = table;

//Draw the PdfLightTable
pdfLightTable.Draw(page, PointF.Empty);

//Save the document
MemoryStream stream = new MemoryStream();
document.Save(stream);
document.Close(true);

}

Refer the below UG documentation link to know more about the table creation in PDF:
https://help.syncfusion.com/file-formats/pdf/working-with-tables

Regards,
Surya Kumar

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Dynamically Create Rows And Columns According To Number Of Questions

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