c#中怎样向写字板发送字串。

可用StreamWriter类﹕
FileStram = fs = new FileStream(@”C:\MyDocuments\ReadMe.txt”,FileMode.CreateNew,FileAssess.Write,FileShare.ShareRead);
StreamWriter sw = new StreamWriter(fs);

你可以看看MSDN中关于Clipboard 类的帮助
示例
以下示例使用 Clipboard 方法将数据放置到系统剪贴板上并从其中检索这些数据。此代码假定已经在窗体上放置 button1、button2、textBox1 和 textBox2。button1_Click 方法调用 SetDataObject 来从文本框中提取选定的文本，然后将其放置到系统剪贴板上。button2_Click 方法调用 GetDataObject 来从系统剪贴板中检索数据。此代码使用 IDataObject 和 DataFormats 提取返回的数据并在 textBox2 中显示该数据。private void button1_Click(object sender, System.EventArgs e) {
    // Takes the selected text from a text box and puts it on the clipboard.
    if(textBox1.SelectedText != "")
       Clipboard.SetDataObject(textBox1.SelectedText);
    else
       textBox2.Text = "No text selected in textBox1";
}

private void button2_Click(object sender, System.EventArgs e) {
    // Declares an IDataObject to hold the data returned from the clipboard.
    // Retrieves the data from the clipboard.
    IDataObject iData = Clipboard.GetDataObject();

    // Determines whether the data is in a format you can use.
    if(iData.GetDataPresent(DataFormats.Text)) {
       // Yes it is, so display it in a text box.
       textBox2.Text = (String)iData.GetData(DataFormats.Text);
    }
    else {
       // No it is not.
       textBox2.Text = "Could not retrieve data off the clipboard.";
    }
}

//FileStream
byte[] fonts = new byte[100];
FileStream fs = new FileStream("c:\\test.txt",FileMode.Create,FileAccess.ReadWrite);
fs.Read(fonts,0,100);
fs.Write(fonts,0,100);//写
fs.Close();

可能是我没有说清楚,我想问的是,怎样在c#里控制别的程序,向它发送按键信息.比如向写字板里发送按下回车键的信息,等.谢谢大家的参于,解决问提后,我马上给分.
我记得有几个api函数能解决此类问提的.

在C#中打开写字板进程，然后发WM给他~~不用API~~C#自己可以

I think you can call keybd_event function to send the VK_SNAPSHOT key code
via PInvoke, and then use the Clipboard class to retrieve the data from the
clipboard.public const int VK_SNAPSHOT =  0x2C;[DllImport("user32.dll")]
public  static extern void  keybd_event(byte  bVk,byte  bScan,int
dwFlags,int  dwExtraInfo);Hope this helps.

public void SaveFile()
{
//声明一个saveFileDialog的实体
SaveFileDialog mySaveFileDialog=new SaveFileDialog();
//标题
mySaveFileDialog.Title="保存文件";
//初始时路径
mySaveFileDialog.InitialDirectory="c:\\Documents and Settings\\Administrator\\桌面\\";
//过滤文件格式
mySaveFileDialog.Filter="文本文件(*.txt) | *.txt| 其它文件(*.*) | *.*";
//把保存文件的对话框显示出来
if(mySaveFileDialog.ShowDialog()==DialogResult.OK)
{
//声明流
Stream fileStream;
//打开文件
if ((fileStream=mySaveFileDialog.OpenFile())!=null)
{
//声明writeAdapter为StreamWriter类型
//以将字符串写入文件流中
StreamWriter writeAdapter=null;
writeAdapter=new StreamWriter(fileStream);
try
{
//将数据通过流写入对象写入文件
//写入姓名
writeAdapter.Write("姓名： ");
writeAdapter.WriteLine(NameTB.Text.ToString());
//写入性别
//若Checked为true则写入1，否则写入0
writeAdapter.Write("性别： ");
if(SexManRB.Checked==true)
writeAdapter.WriteLine("男");
else
writeAdapter.WriteLine("女");
//写入学历的索引值
writeAdapter.Write("学历： ");
writeAdapter.WriteLine(AcademicLB.SelectedIndex);
//写入兴趣
//若Checked为true则写入1，否则写入0
                        writeAdapter.WriteLine("兴趣： ");
if(HabitCB1.Checked==true)
writeAdapter.WriteLine("      唱歌");
else
writeAdapter.Write("");
if(HabitCB2.Checked==true)
writeAdapter.WriteLine("      阅读");
else
writeAdapter.Write("");
if(HabitCB3.Checked==true)
writeAdapter.WriteLine("      旅游");
else
writeAdapter.WriteLine("");
//写入生日
writeAdapter.Write("生日： ");
writeAdapter.WriteLine(BirthdayDTP.Value);
//写入职业
writeAdapter.Write("职业： ");
writeAdapter.WriteLine(JobCOB.Text); //...
//..
}
catch(IOException e)
{
Console.WriteLine(e.ToString());
}
//mySaveFileDialog.ShowDialog();
//最后，将流写入对象关闭
writeAdapter.Close();
//MenuItem saveMenuItem=new MenuItem("保存",new EventHandler(this.SaveFileMenu),Shortcut,CtrlS);
}
}
//Application.Exit();
}

there is an example how to use keybd_event in C#,maybe help you
using System;
using System.Runtime.InteropServices;
using System.Text;namespace ConsoleApplication8{
  class Class1{
    [STAThread]
    static void Main(string[] args){
      // Display current status of keys.
      Console.WriteLine(
        "**BEFORE**\r\nCAP: {0}\r\nSCR: {1}\r\nNUM: {2}",
        Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",
        Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",
        Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"
      );
      //Toggle all the keys:
      Keyboard.SetState(
        VirtualKeys.VK_CAPITAL,
        !Keyboard.GetState(VirtualKeys.VK_CAPITAL)
      );
      Keyboard.SetState(
        VirtualKeys.VK_SCROLL,
        !Keyboard.GetState(VirtualKeys.VK_SCROLL)
      );
      Keyboard.SetState(
        VirtualKeys.VK_NUMLOCK,
        !Keyboard.GetState(VirtualKeys.VK_NUMLOCK)
      );
      // Display new status of keys.
      Console.WriteLine(
        "\r\n**AFTER**\r\nCAP: {0}\r\nSCR: {1}\r\nNUM: {2}",
        Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",
        Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",
        Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"
      );
      Console.ReadLine();
    }
  }
  public enum VirtualKeys: byte{
    VK_NUMLOCK = 0x90,
    VK_SCROLL = 0x91,
    VK_CAPITAL = 0x14
  }
  class Keyboard{
    const uint KEYEVENTF_EXTENDEDKEY = 0x1;
    const uint KEYEVENTF_KEYUP = 0x2;
    [DllImport("user32.dll")]
    static extern short GetKeyState(int nVirtKey);
    [DllImport("user32.dll")]
    static extern void keybd_event(
      byte bVk,
      byte bScan,
      uint dwFlags,
      uint dwExtraInfo
    );
    public static bool GetState(VirtualKeys Key){
      return (GetKeyState((int)Key)==1);
    }
    public static void SetState(VirtualKeys Key, bool State){
      if(State!=GetState(Key)){
        keybd_event(
          (byte)Key,
          0x45,
          KEYEVENTF_EXTENDEDKEY | 0,
          0
        );
        keybd_event(
          (byte)Key,
          0x45,
          KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP,
          0
        );
      }
    }
  }
}

调试易

c#中怎样向写字板发送字串。

解决方案 »