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Class QueryColumnCountEventHandler - Xamarin.Forms API Reference | Syncfusion

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    Class QueryColumnCountEventHandler

    Represents the method for handling ColumnNumberEvent.

    Inheritance
    System.Object
    QueryColumnCountEventHandler
    Namespace: Syncfusion.Pdf.Tables
    Assembly: Syncfusion.Pdf.Portable.dll
    Syntax
    public sealed class QueryColumnCountEventHandler : MulticastDelegate
    Examples
    public string[][] datastring = new string[2][];
    // Specify values for the table
    datastring[0] = new string[] { "111", "Maxim", "100" };
    datastring[1] = new string[] { "222", "Calvin", "95" };
    // Create a new document
    PdfDocument document = new PdfDocument();
    //Create a Page
    PdfPage page = document.Pages.Add();
    //Create the PdfLightTable
    PdfLightTable pdfLightTable = new PdfLightTable();
    // Setting the DataSourceType as Direct
    pdfLightTable.DataSourceType = PdfLightTableDataSourceType.External;
    //Subscribing Events
    pdfLightTable.QueryColumnCount += new QueryColumnCountEventHandler(table_QueryColumnCount);
    pdfLightTable.QueryNextRow += new QueryNextRowEventHandler(table_QueryNextRow);
    //Draw PdfLightTable.
    pdfLightTable.Draw(page, new PointF(0, 0));
    //Save the document.
    document.Save("Output.pdf");
    //Close the document
    document.Close(true);
    
    void table_QueryColumnCount(object sender, QueryColumnCountEventArgs args)
    {
    args.ColumnCount = 3;
    }
    
    void table_QueryNextRow(object sender, QueryNextRowEventArgs args)
    {
    if (datastring.Length > args.RowIndex)
    args.RowData = new string[] { datastring[args.RowIndex][0], datastring[args.RowIndex][1], datastring[args.RowIndex][2] };
    }
    Public datastring(2)() As String
    ' Specify values for the table
    datastring(0) = New String() { "111", "Maxim", "100" }
    datastring(1) = New String() { "222", "Calvin", "95" }
    ' Create a new document
    Dim document As New PdfDocument()
    'Create a Page
    Dim page As PdfPage = document.Pages.Add()
    'Create the PdfLightTable
    Dim pdfLightTable As New PdfLightTable()
    ' Setting the DataSourceType as Direct
    pdfLightTable.DataSourceType = PdfLightTableDataSourceType.External
    'Subscribing Events
    AddHandler pdfLightTable.QueryColumnCount, AddressOf table_QueryColumnCount
    AddHandler pdfLightTable.QueryNextRow, AddressOf table_QueryNextRow
    'Draw PdfLightTable.
    pdfLightTable.Draw(page, New PointF(0, 0))
    'Save the document.
    document.Save("Output.pdf")
    'Close the document
    document.Close(True)
    
    Private Sub table_QueryColumnCount(ByVal sender As Object, ByVal args As QueryColumnCountEventArgs)
    args.ColumnCount = 3
    End Sub
    
    Private Sub table_QueryNextRow(ByVal sender As Object, ByVal args As QueryNextRowEventArgs)
    If datastring.Length > args.RowIndex Then
    args.RowData = New String() { datastring(args.RowIndex)(0), datastring(args.RowIndex)(1), datastring(args.RowIndex)(2) }
    End If
    End Sub

    Constructors

    QueryColumnCountEventHandler(Object, IntPtr)

    Declaration
    public QueryColumnCountEventHandler(object object, IntPtr method)
    Parameters
    Type Name Description
    System.Object object
    System.IntPtr method

    Methods

    BeginInvoke(Object, QueryColumnCountEventArgs, AsyncCallback, Object)

    Declaration
    public virtual IAsyncResult BeginInvoke(object sender, QueryColumnCountEventArgs args, AsyncCallback callback, object object)
    Parameters
    Type Name Description
    System.Object sender
    QueryColumnCountEventArgs args
    System.AsyncCallback callback
    System.Object object
    Returns
    Type
    System.IAsyncResult

    EndInvoke(IAsyncResult)

    Declaration
    public virtual void EndInvoke(IAsyncResult result)
    Parameters
    Type Name Description
    System.IAsyncResult result

    Invoke(Object, QueryColumnCountEventArgs)

    Declaration
    public virtual void Invoke(object sender, QueryColumnCountEventArgs args)
    Parameters
    Type Name Description
    System.Object sender
    QueryColumnCountEventArgs args

    See Also

    PdfDocument
    PdfLightTable
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