using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Threading;
using System.IO;
namespace MYQQ
{
///
/// 聊天窗体:2015.12.23； 聊天窗体第一个图片；
///
public partial class ChatForm : Form
{
//0 设置成员变量，4个
public int friendId; // 当前聊天的好友号码
public string nickName; // 当前聊天的好友昵称
public int faceId; // 当前聊天的好友头像Id
public string myName; //自己的昵称;
//****************************以下构造函数不要动
public ChatForm()
{
InitializeComponent();
}
//**************************不要动
//第1步:窗体加载时的动作
private void ChatForm_Load(object sender, EventArgs e)
{
// 设置窗体标题
this.Text = string.Format("与{0}聊天中",nickName);
// 设置窗体顶部显示的好友信息
picFace.Image = ilFaces.Images[faceId];
lblFriend.Text = string.Format("{0}({1})",nickName,friendId);
ShowMessage(); // 读取所有的未读消息，显示在窗体中
}
// 关闭窗体
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
///
/// 将单引号'转换为双引号"
/// //Sql参数化实现，避免sql单引号问题,但是没有学，所以没有研究!
///
///
///
private string CheckString(string str)
{
string returnStr = "";
if (str.IndexOf("'") != -1) //判断字符串是否含有单引号
{
returnStr = str.Replace("'", "''");
str = returnStr;
}
return str;
}
//4 发送消息
private void btnSend_Click(object sender, EventArgs e)
{
if (txtChat.Text.Trim() == "") // 不能发送空消息
{
MessageBox.Show("不能发送空消息！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else if (txtChat.Text.Trim().Length > 50)
{
MessageBox.Show("消息内容过长，请分为几条发送！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else // 发送消息，写入数据库
{// MessageTypeId:1-表示聊天消息，为简化操作没有读取数据表，到S2可以用常量或者枚举实现
lblMessages.AppendText("\r\n"+myName+":\r\n\t"+txtChat.Text);
int result = -1; // 表示操作数据库的结果
string sql = string.Format(
@"INSERT Messages(FromUserId, ToUserId, Message, MessageTypeId, MessageState) VALUES ({0},{1},'{2}',{3},{4})",
UserHelper.loginId, friendId, CheckString(txtChat.Text.Trim()), 1, 0);
try
{
// 执行命令
SqlCommand command = new SqlCommand(sql, DBHelper.conn);
DBHelper.conn.Open();
result = command.ExecuteNonQuery();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelper.conn.Close();
}
if (result != 1)
{
MessageBox.Show("服务器出现意外错误！", "抱歉", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
txtChat.Text = ""; // 输入消息清空
}
}
//********************************************************************发送消息结束!!!!!!!!!!
///
///第2步：读取所有的未读消息，显示在窗体中
///
private void ShowMessage()
{
string messageIdsString = ""; // 消息的Id组成的字符串;可以用ids代替这么长的变量;
string message; // 消息内容
string messageTime; // 消息发出的时间
string sql = string.Format(
"SELECT Id, Message,MessageTime From Messages WHERE FromUserId={0} AND ToUserId={1} AND MessageTypeId=1 AND MessageState=0",
friendId, UserHelper.loginId); // 读取消息的SQL语句;消息类型为 1：普通聊天消息；0:消息状态:未读
try
{
SqlCommand command = new SqlCommand(sql, DBHelper.conn);
DBHelper.conn.Open();
SqlDataReader reader = command.ExecuteReader(); //读到一个临时表;
while (reader.Read()) // 循环将消息添加到窗体上
{
messageIdsString += Convert.ToString(reader["Id"]) + ","; //46,47,147,157,159,
message = Convert.ToString(reader["Message"]);
messageTime = Convert.ToDateTime(reader["MessageTime"]).ToString(); // 转换为日期类型，告诉学员
//lblMessages:上面的文本框；消息太多了，需要回车换行
lblMessages.Text += string.Format("\r\n{0} {1}\r\n {2}",nickName,messageTime,message);
}
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelper.conn.Close();
}
//2.2 把显示出的消息置为已读；我登陆了，点过头像闪烁，就表示已读!
if (messageIdsString.Length > 1)
{
//SetMessageRead(messageIdsString, ','); //读过之后，需要设置状态为1
SetMessageRead2(messageIdsString.Remove(messageIdsString.Length - 1)); //Remove()：消除一个长度的逗号;去掉最后面的那个,
}
}
///
/// 使用新方法，来更新数据库，把获取的IdString作为参数;
///
///
private void SetMessageRead2(string messageIdsString) //46,47,147,157,159
{
string sql = string.Format("Update Messages SET MessageState=1 WHERE Id in ({0})", messageIdsString); ; // 更新状态的SQL语句的固定部分
try
{
SqlCommand command = new SqlCommand(); // 创建Command对象
command.Connection = DBHelper.conn; // 指定数据库连接
DBHelper.conn.Open(); // 打开数据库连接
command.CommandText = sql; // 指定要执行的SQL语句
int result = command.ExecuteNonQuery(); // 执行命令
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelper.conn.Close();
}
}
//**************************************************************读取消息方法结束!
///
///3 把显示出的消息置为已读
///
private void SetMessageRead(string messageIdsString, char separator) //151,152,153,154; 分隔符,
{
string[] messageIds = messageIdsString.Split(separator); // 分割出每个消息Id,Split,按照某个字符进行分割成数组151 152 153 154
string sql = "Update Messages SET MessageState=1 WHERE Id="; // 更新状态的SQL语句的固定部分
string updateSql; // 执行的SQL语句
try
{
SqlCommand command = new SqlCommand(); // 创建Command对象
command.Connection = DBHelper.conn; // 指定数据库连接
DBHelper.conn.Open(); // 打开数据库连接
foreach (string id in messageIds) //逐个从数组取数据151 152 153 154
{
if (id != "")
{
updateSql = sql + id; // 补充完整的SQL语句
command.CommandText = updateSql; // 指定要执行的SQL语句
int result = command.ExecuteNonQuery(); // 执行命令
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
DBHelper.conn.Close();
}
}
//**********************************************************设置消息已读结束!!!!!
private void timer1_Tick(object sender, EventArgs e)
{
ShowMessage(); //每隔3秒读下消息！
}
private void toolStripButton3_Click(object sender, EventArgs e)
{
Vibration();
//可以向数据库插入一个震动标志指令，对方收到这个指令，则本矿口震动！
}
//震动方法
private void Vibration()
{
Point pOld = this.Location;//原来的位置
int radius = 3;//半径
for (int n = 0; n < 3; n++) //旋转圈数
{
//右半圆逆时针
for (int i = -radius; i <= radius; i++)
{
int x = Convert.ToInt32(Math.Sqrt(radius * radius - i * i));
int y = -i;
this.Location = new Point(pOld.X + x, pOld.Y + y);
Thread.Sleep(10);
}
//左半圆逆时针
for (int j = radius; j >= -radius; j--)
{
int x = -Convert.ToInt32(Math.Sqrt(radius * radius - j * j));
int y = -j;
this.Location = new Point(pOld.X + x, pOld.Y + y);
Thread.Sleep(10);
}
}
//抖动完成，恢复原来位置
this.Location = pOld;
}
//字体代码
private void toolStripButton1_Click(object sender, EventArgs e)
{
fontDialog1.ShowDialog();
lblMessages.Font = fontDialog1.Font;
}
//颜色代码
private void toolStripDropDownButton2_Click(object sender, EventArgs e)
{
colorDialog1.ShowDialog();
lblMessages.ForeColor = colorDialog1.Color;
}
//发图片
private void toolStripButton4_Click(object sender, EventArgs e)
{
FileSend("PNG文件|*.png|GIF文件|*.gif|BMP文件|*.bmp|JPG文件|*.jpg|所有文件(*.*)|*.*");
}
public string Cuser = string.Empty;
public string CuserIP = string.Empty;
#region 文件传送,待完善
private void FileSend(string Filter)
{
try
{
OpenFileDialog Dlg = new OpenFileDialog();
FileInfo FI;
Dlg.Filter = Filter;
Dlg.CheckFileExists = true;
Dlg.InitialDirectory = "C:\\Documents and Settings\\" + System.Environment.UserName + "\\桌面\\";
if (Dlg.ShowDialog() == DialogResult.OK)
{
FI = new FileInfo(Dlg.FileName);
string sendMsg = ":DATA:" + Cuser + "|" + System.Environment.UserName + "|" +
CuserIP + "|" + Dlg.FileName + "|" + FI.Length + "|";
byte[] buff = Encoding.Default.GetBytes(sendMsg);
this.lblMessages.SelectionColor = Color.Red;
this.lblMessages.AppendText("【发送文件】" + Dlg.FileName + "\r\n");
this.lblMessages.ForeColor = Color.Black;
this.lblMessages.ScrollToCaret();
}
}
catch
{
MessageBox.Show("文件发送失败！" + "\r\n");
}
}
#endregion
private void button1_Click(object sender, EventArgs e)
{
if (btnZd.Text.Equals(">>"))
{
btnZd.Text = "<<";
this.Width = 400;
}
else {
btnZd.Text = ">>";
this.Width = 610;
}
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
}
}
}
