Class SfQRCodeGenerator

Specifies all the properties for the QRCode to be rendered.

Inheritance
System.Object
SfBaseComponent
SfQRCodeGenerator
Inherited Members
Namespace: Syncfusion.Blazor.BarcodeGenerator
Assembly: Syncfusion.Blazor.dll
Syntax
public class SfQRCodeGenerator : SfBaseComponent
Examples
<SfQRCodeGenerator Width="200" Height="200" Version="QRCodeVersion.Version40" Value="65213323"  BackgroundColor="white" ForeColor="black" OnValidationFailed="@OnInvalid">
 <QRCodeGeneratorDisplayText Text = "" Font="monospace" Size="25" Alignment="Alignment.Left" Position="TextPosition.Top">
    <QRCodeTextMargin Left = "0" Top="0" Right="0" Bottom="0"></QRCodeTextMargin>
 </QRCodeGeneratorDisplayText>
 <QRMargin Left = "10" Top="10" Right="10" Bottom="10"></QRMargin>
</SfQRCodeGenerator>
@code{
 public void OnInvalid(ValidationFailedEventArgs args)
 {
 }
}

Constructors

SfQRCodeGenerator()

Declaration
public SfQRCodeGenerator()

Properties

BackgroundColor

Specifies the background color of the QRCode. By default, it is set to white.

Declaration
public string BackgroundColor { get; set; }
Property Value
Type Description
System.String

ChildContent

Sets content for QRCode generator element including HTML support and its customizations.

Declaration
public RenderFragment ChildContent { get; set; }
Property Value
Type Description
Microsoft.AspNetCore.Components.RenderFragment

DisplayText

Specifies the text properties for the QRCode.

Declaration
public QRCodeGeneratorDisplayText DisplayText { get; set; }
Property Value
Type Description
QRCodeGeneratorDisplayText

ErrorCorrectionLevel

Specifies the error correction level of the QR code.

Declaration
public ErrorCorrectionLevel ErrorCorrectionLevel { get; set; }
Property Value
Type Description
ErrorCorrectionLevel

ForeColor

Specifies the line and text color of the QRCode. By default, it is set to black.

Declaration
public string ForeColor { get; set; }
Property Value
Type Description
System.String

Height

Specifies the height of the QRCode model. By default, it is set to 100%.

Declaration
public string Height { get; set; }
Property Value
Type Description
System.String

Margin

Specifies the margin properties for the QRCode. By default, it is set to 10 from all sides.

Declaration
public QRMargin Margin { get; set; }
Property Value
Type Description
QRMargin

OnValidationFailed

Triggers when the QRCode input is an invalid string.

Declaration
public EventCallback<ValidationFailedEventArgs> OnValidationFailed { get; set; }
Property Value
Type Description
Microsoft.AspNetCore.Components.EventCallback<ValidationFailedEventArgs>

Value

Specifies the value of the QRCode to be rendered.

Declaration
public string Value { get; set; }
Property Value
Type Description
System.String

Version

Specifies the version of the QR code.

Declaration
public QRCodeVersion Version { get; set; }
Property Value
Type Description
QRCodeVersion

Width

Specifies the width of the QRCode model. By default, it is set to 100%.

Declaration
public string Width { get; set; }
Property Value
Type Description
System.String

XDimension

Represents the width of the smallest element.

Declaration
public double XDimension { get; set; }
Property Value
Type Description
System.Double

Methods

BuildRenderTree(RenderTreeBuilder)

Declaration
protected override void BuildRenderTree(RenderTreeBuilder __builder)
Parameters
Type Name Description
Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder

Export(String, BarcodeExportType)

Export the barcode as an image in the specified image type and downloads it in the browser.

Declaration
public void Export(string fileName, BarcodeExportType exportType)
Parameters
Type Name Description
System.String fileName

Specifies the filename of the barcode image to be download.
BarcodeExportType exportType

Specifies the type used to export the barcode.

ExportAsBase64Image(BarcodeExportType)

Export the barcode as an image in the specified image type and returns it as base64 string.

Declaration
public Task<string> ExportAsBase64Image(BarcodeExportType exportType)
Parameters
Type Name Description
BarcodeExportType exportType
Returns
Type Description
System.Threading.Tasks.Task<System.String>

Returns the base64 string value.

OnAfterRenderAsync(Boolean)

The OnAfterRenderAsync method is invoked after the SfQRCodeGenerator component has finished rendering.

Declaration
protected override Task OnAfterRenderAsync(bool firstRender)
Parameters
Type Name Description
System.Boolean firstRender

The first time the component instance is rendered is set to true.
Returns
Type Description
System.Threading.Tasks.Task
Overrides

OnInitializedAsync()

OnInitializedAsync is invoked when the SfQRCodeGenerator component is initialized.

Declaration
protected override Task OnInitializedAsync()
Returns
Type Description
System.Threading.Tasks.Task
Overrides

OnParametersSetAsync()

Sets the parameters for the SfQRCodeGenerator component in the render tree.

Declaration
protected override Task OnParametersSetAsync()
Returns
Type Description
System.Threading.Tasks.Task