在webBrowser中觸發html頁面中的javaScript.

標籤：

執行個體的功能是把一個圖片加到html的img tag中。

You can encode the image in base64. For example

<img src="data:image/gif;base64,MyImageDataEncodedInBase64
=" alt="My Image data in base 64" />

Here is a full example of how you can accomplish this:

using System;using System.IO;using System.Runtime.InteropServices;using System.Windows.Forms;namespace ImageEncodedInBase64InAWebBrowser{    [ComVisible(true)]    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            string url = Directory.GetCurrentDirectory() + "\\page.html";            webBrowser1.Url = new Uri(url);            webBrowser1.ObjectForScripting = this;        }        private void button1_Click(object sender, EventArgs e)        {            string imageInBase64 = ReadImageInBase64();            webBrowser1.Document.InvokeScript("setImageData", new[] { imageInBase64 });        }        private string ReadImageInBase64()        {            string imagePath = Directory.GetCurrentDirectory() + "\\opensource.png";            using (var fs = new FileStream(imagePath, FileMode.Open, FileAccess.Read))            {                var buffer = new byte[fs.Length];                fs.Read(buffer, 0, (int)fs.Length);                return Convert.ToBase64String(buffer);            }        }    }}

 

And this Javascript code:

function setImageData(imageBase64) {    var myImg = document.getElementById("myImg");    myImg.src = "data:image/png;base64," + imageBase64;}

 

在webBrowser中觸發html頁面中的javaScript.