ASPxBinaryImage.ContentBytes Property

Gets or sets an array of the bytes representing the image.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v18.2.dll

Declaration

C#

[DefaultValue(null)]
public virtual byte[] ContentBytes { get; set; }

VB.NET

<DefaultValue(Nothing)>
Public Overridable Property ContentBytes As Byte()

Property Value

Type	Default	Description
Byte[]	*null*	A Byte array that contains the image’s contents.

Example

This example demonstrates how to use the ASPxBinaryImage.ContentBytes property.

C#

    protected void ucImageUpload_FileUploadComplete
    (object sender, DevExpress.Web.FileUploadCompleteEventArgs e) {
        UploadedFile uploadFile = ucImageUpload.UploadedFiles.Length == 0 ? 
           null : ucImageUpload.UploadedFiles[0];
        Session["UploadedImageBytes"] = uploadFile.FileBytes;
    }
    protected void btnApply_Click(object sender, EventArgs e) {
        biImage.ContentBytes = (byte[])Session["UploadedImageBytes"];
    }

ASPX

        <dxwe:ASPxBinaryImage ID="biImage" runat="server">
        </dxwe:ASPxBinaryImage>

        <dxwuc:ASPxUploadControl runat="server" ID="ucImageUpload" 
            ClientInstanceName="ucImageUpload" 
            onfileuploadcomplete="ucImageUpload_FileUploadComplete">
            <ValidationSettings AllowedFileExtensions=".jpg,.jpe,.jpeg,.gif">
            </ValidationSettings>
        </dxwuc:ASPxUploadControl>

        <dxwe:aspxbutton id="btnUpload" runat="server" autopostback="False" text="Upload">
            <ClientSideEvents Click="function(s, e) { ucImageUpload.UploadFile(); }" />
        </dxwe:aspxbutton>

        <dxwe:aspxbutton id="btnApply" runat="server" text="Apply image from session" 
            onclick="btnApply_Click">
        </dxwe:aspxbutton>

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ContentBytes property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

pdf-viewer-in-aspnet-web-applications/CS/PdfViewer.ascx.cs#L109

    bitmap.Save(stream, ImageFormat.Png);
    image.ContentBytes = stream.ToArray();
}

aspxgridview-how-to-display-barcode-in-a-grid-column-t280853/CS/ASPxGridViewBarCode/Default.aspx.cs#L20

    if (value != null)
        image.ContentBytes = GetBarCodeImage(value.ToString());
}

VB.NET

pdf-viewer-in-aspnet-web-applications/VB/PdfViewer.ascx.vb#L115

    bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png)
    image.ContentBytes = stream.ToArray()
End Using

aspxgridview-how-to-display-barcode-in-a-grid-column-t280853/VB/ASPxGridViewBarCode/Default.aspx.vb#L22

If value IsNot Nothing Then
    image.ContentBytes = GetBarCodeImage(value.ToString())
End If