我试图将墨迹从 Microsoft.Ink 命名空间转换为内存流,以便将其转换为图像,但我不明白为什么它在内存流中出现错误。我有点觉得这是 Convert.FromBase64String() 的错误
但我不知道还有什么其他选择可以将其转换为图像。
请帮我
这是我的代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using Microsoft.Ink;
namespace testPaint
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
InkCollector ink;
private void Form1_Load(object sender, EventArgs e)
{
ink = new InkCollector(pictureBox1);
ink.Enabled = true;
ink.AutoRedraw = true;
}
private void btnSave_Click(object sender, EventArgs e)
{
UTF8Encoding utf8 = new UTF8Encoding();
ink.Enabled = false;
string strInk = Convert.ToBase64String(ink.Ink.Save(PersistenceFormat.Base64InkSerializedFormat, CompressionMode.Maximum));
textBox1.Text = strInk;
ink.Enabled = true;
}
private void btnClr_Click(object sender, EventArgs e)
{
ink.Enabled = false;
ink.Ink = new Microsoft.Ink.Ink();
ink.Enabled = true;
pictureBox1.Invalidate();
}
private void btnExport_Click(object sender, EventArgs e)
{
byte[] byImage = Convert.FromBase64String(textBox1.Text);
MemoryStream ms = new MemoryStream();
ms.Write(byImage, 0, byImage.Length);
Image img = Image.FromStream(ms);
img.Save("test.gif", System.Drawing.Imaging.ImageFormat.Gif);
ink.Enabled = true;
}
}
}