Barcode Windows Forms

TX Barcode .NET can be used in ASP.NET web applications to render barcode images. This sample shows how to use a WebForms Image control to render a barcode image that is created code-behind.

The ASPX page is very simple and consists of a WebForms Image control, a label to show the raw text and a refresh button:

In the Page_Load event, the current date and time measured in ticks is passed as a QueryString to the ImageUrl property of the Image control. The URL is another ASPX page that uses TX Barcode .NET to create the barcode image.

protected void Page_Load(object sender, EventArgs e) { // set the barcode text string sBarcodeText = DateTime.Now.Ticks.ToString();

// set the URL to the ASPX page that returns the image data Barcode1.ImageUrl = "CreateBarcode.aspx?text=" + sBarcodeText; lblBarcodeText.Text = sBarcodeText; }

In the Page_Load event of CreateBarcode.aspx , TX Barcode .NET is used to save the encoded string as a barcode image into a MemoryStream . This stream is returned using Response.BinaryWrite .

protected void Page_Load(object sender, EventArgs e) { // create a new TXBarcodeControl TXTextControl.Barcode.TXBarcodeControl barcode = new TXTextControl.Barcode.TXBarcodeControl(); barcode.CreateControl();

// set the barcode type and size barcode.BarcodeType = TXTextControl.Barcode.BarcodeType.MicroPDF; barcode.UpperTextLength = 40; barcode.Width = 500;

// set the text from the QueryString barcode.Text = Request.QueryString["text"];

// save the barcode to an image MemoryStream MemoryStream stream = new MemoryStream(); barcode.SaveImage(stream, System.Drawing.Imaging.ImageFormat.Png);

// send back the image Response.Clear(); Response.ContentType = "image/png"; Response.BinaryWrite(stream.ToArray()); Response.Flush(); Response.Close(); Response.End(); }

The HTML image element loads the image data dynamically from the CreateBarcode.aspx page. Every time, the Refresh button is clicked, the barcode is updated with the current date and time.

Download the sample from GitHub and test it on your own.

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Barcode Windows Forms

Post tagged with Barcode Windows Forms in 2015

Server & Web

Windows Forms

WPF

ActiveX

Core Technologies

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Support

Getting Started

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Other Resources

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Contact

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Barcode Windows Forms

Post tagged with Barcode Windows Forms in 2015 ​

November 2015

Post tagged with Barcode Windows Forms in 2015