wpf richtextbox_wpf textbox 多行_wpf textblock 滚动条

WPF richTextBox问题

方法一

//保存

MemoryStream s1 = new MemoryStream();

TextRange documentTextRange1 = new TextRange(this.richTextBox1.Document.ContentStart, this.richTextBox1.Document.ContentEnd);

documentTextRange1.Save(s1, DataFormats.XamlPackage);

string value = Convert.ToBase64String(s1.ToArray());//保存的数据是ToBase64String是我想要来保存到库的类型

//获取

MemoryStream set1 = new MemoryStream((Convert.FromBase64String(value)));

TextRange TR1 = new TextRange(this.richTextBox2.Document.ContentStart, this.richTextBox2.Document.ContentEnd);

TR1.Load(set1, DataFormats.XamlPackage);

//显示

richTextBox2.AppendText("用户 " + DateTime.Now.ToLongTimeString() + "\r\n");

richTextBox2.AppendText(TR1.Text + "\r\n");

//显示结果

输入123显示：

123用户 14:28:21

123用户 14:28:21

疑问：怎么123是在用户前面呢，而且还打印2次，还帮我清空richTextBox

方法2

//保存

FlowDocument document = richTextBox1.Document;

System.IO.Stream s = new System.IO.MemoryStream();

System.Windows.Markup.XamlWriter.Save(document, s);

byte[] data2 = new byte[s.Length];

s.Position = 0;

s.Read(data2, 0, data2.Length);

s.Close();

//获取

System.IO.Stream ss = new System.IO.MemoryStream(data2);

FlowDocument docs = System.Windows.Markup.XamlReader.Load(ss) as FlowDocument;

ss.Close();

//显示

richTextBox2.AppendText("用户 " + DateTime.Now.ToLongTimeString()+ "\r\n");

richTextBox2.AppendText(docs.ToString()+ "\r\n");

显示结果：输入123

用户 14:28:22

System.Windows.Documents.FlowDocument

疑问：如果让docs.ToString()转为我要显示的值

分不多，麻烦高手指导下

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