/// <summary>
/// 通过分页存储过程绑定数据
/// </summary>
/// <param name="tablename">表、视图名</param>
/// <param name="fieldkey">关键字</param>
/// <param name="currentpage">当前页数</param>
/// <param name="pagesize">每页的数量</param>
/// <param name="fieldshow">显示的字段</param>
/// <param name="fieldorder">排序方式</param>
/// <param name="where">条件</param>
/// <param name="recordcount">总计页数</param>
/// <returns></returns>
public static DataSet GetGriview(string tablename, string fieldkey, int currentpage, int pagesize, string fieldshow, string fieldorder, string where, ref int recordcount)
{
SqlConnection conn = ConnectionManger.GetConnection();
conn.Open();
SqlCommand cmd = new SqlCommand("pageination", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@tbname", SqlDbType.NVarChar, 50).Value = tablename;
cmd.Parameters.Add("@FieldKey", SqlDbType.NVarChar, 50).Value = fieldkey;
cmd.Parameters.Add("@PageCurrent", SqlDbType.Int).Value = currentpage;
cmd.Parameters.Add("@PageSize", SqlDbType.Int).Value = pagesize;
cmd.Parameters.Add("@FieldShow", SqlDbType.NVarChar, 1000).Value = fieldshow;
cmd.Parameters.Add("@FieldOrder", SqlDbType.NVarChar, 50).Value = fieldorder;
cmd.Parameters.Add("@Where", SqlDbType.NVarChar, 1000).Value = where;
cmd.Parameters.Add("@RecordCount", SqlDbType.Int).Direction = ParameterDirection.Output;
cmd.Parameters.Add("@PageCount", SqlDbType.Int).Direction = ParameterDirection.Output;
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
recordcount = (int)cmd.Parameters["@RecordCount"].Value;
//pagecount = cmd.Parameters["@PageCount"].Value.ToString();
conn.Close();
return(ds);
}
//查询操作，判断是否存在
public static bool IsPriExist(string str)
{
SqlConnection conn = ConnectionManger.GetConnection();
conn.Open();
SqlCommand cmd = new SqlCommand(str, conn);
SqlDataReader reader;
try
{
reader = cmd.ExecuteReader();
if (reader.Read())
{
reader.Dispose();
return(true);
}
else
{
return(false);
}
}
catch
{
return(false);
}
finally
{
cmd.Dispose();
}
}
/// <summary>
/// 带参数绑定数据
/// </summary>
/// <param name="str">存储过程</param>
/// <returns></returns>
public static DataSet GetDataSet(string str, CommandType cmdtype, SqlParameter[] cmdParm)
{
SqlConnection conn = ConnectionManger.GetConnection();
DataSet ds = new DataSet();
try
{
SqlCommand cmd = new SqlCommand(str, conn);
cmd.CommandText = str;
cmd.CommandType = cmdtype;
//PrepareCommand(cmd, conn, null, cmdtype, str, parm);
SqlDataAdapter da = new SqlDataAdapter(cmd);
foreach (SqlParameter parm in cmdParm)
{
cmd.Parameters.Add(parm);
}
da.Fill(ds);
return(ds);
}
catch
{
conn.Close();
throw;
}
}
/// <summary>
/// 执行一条返回第一条记录第一列的SqlCommand命令，通过专用的连接字符串。
/// 使用参数数组提供参数
/// </summary>
/// <remarks>
/// 使用示例：
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">一个有效的数据库连接字符串</param>
/// <param name="commandType">SqlCommand命令类型 (存储过程， T-SQL语句， 等等。)</param>
/// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
/// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
/// <returns>返回一个object类型的数据，可以通过 Convert.To{Type}方法转换类型</returns>
public static object ExecuteScalar(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
{
SqlCommand cmd = new SqlCommand();
using (SqlConnection connection = ConnectionManger.GetConnection())
{
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return(val);
}
}
/// <summary>
///执行一个不需要返回值的SqlCommand命令，通过指定专用的连接字符串。
/// 使用参数数组形式提供参数列表
/// </summary>
/// <remarks>
/// 使用示例：
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">一个有效的数据库连接字符串</param>
/// <param name="commandType">SqlCommand命令类型 (存储过程， T-SQL语句， 等等。)</param>
/// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
/// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
/// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
public static int ExecuteNonQuery(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = ConnectionManger.GetConnection())
{
//通过PrePareCommand方法将参数逐个加入到SqlCommand的参数集合中
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
//清空SqlCommand中的参数列表
cmd.Parameters.Clear();
return(val);
}
}
public static DataSet DataSetBind(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
{
SqlCommand cmd = new SqlCommand();
using (SqlConnection connection = ConnectionManger.GetConnection())
{
DataSet ds = new DataSet();
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
//object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return(ds);
}
}
//public void readxml()
//{
// XmlDocument xmlDoc = new XmlDocument();
// xmlDoc.Load("han.xml");
// XmlNodeList nodeList = xmlDoc.SelectSingleNode("han").ChildNodes;//获取bookstore节点的所有子节点
// foreach (XmlNode xn in nodeList)//遍历根节点的所有子节点
// {
// XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
// //if (xe.GetAttribute("lun") == "video1")
// //{
// // strvideo1 = xe.InnerText.Trim(); //给视频赋值IP
// //}
// //if (xe.GetAttribute("lun") == "video2")
// //{
// // strvideo2 = xe.InnerText.Trim();
// //}
// //if (xe.GetAttribute("lun") == "video3")
// //{
// // strvideo3 = xe.InnerText.Trim();
// //}
// //if (xe.GetAttribute("lun") == "video4")
// //{
// // strvideo4 = xe.InnerText.Trim();
// //}
// if (xe.GetAttribute("lun") == "qu")
// {
// ConnectionManger.G_MineArea = xe.InnerText.Trim();
// }
// //if (xe.GetAttribute("lun") == "Com")
// //{
// // Com = xe.InnerText.Trim();
// //}
// //if (xe.GetAttribute("lun") == "Com")
// //{
// // Com = xe.InnerText.Trim();
// //}
// }
//}
private void FrmNew_Load(object sender, EventArgs e)
{
//readxml();
ConnectionManger.readxml();
string str = "select * from user_table where user_area = '" + ConnectionManger.G_MineArea + "'";
DataTable dt = SQLHelper.GetDataSet(str, CommandType.Text).Tables[0];
for (int i = 0; i < dt.Rows.Count; i++)
{
CmbName.Items.Add(dt.Rows[i]["user_name"].ToString());
}
dt.Dispose();
if (CmbName.Items.Count > 0)
{
CmbName.SelectedIndex = 0;
}
TxtMima.Focus();
TxtMima.Select();
}
/// <summary>
/// 通过数据集来绑定数据
/// </summary>
/// <param name="str">SQL语句/存储过程CommandType.Text/CommandType.StoredProcedure </param>
/// <returns></returns>
public static DataSet GetDataSet(string str, CommandType cmdtype)
{
SqlConnection conn = ConnectionManger.GetConnection();
DataSet ds = new DataSet();
try
{
SqlCommand cmd = new SqlCommand(str, conn);
cmd.CommandType = cmdtype;
SqlDataAdapter da = new SqlDataAdapter(str, conn);
da.Fill(ds);
return(ds);
}
catch
{
conn.Close();
throw;
}
}
/// <summary>
/// 执行一条返回结果集的SqlCommand命令，通过专用的连接字符串。
/// 使用参数数组提供参数
/// </summary>
/// <remarks>
/// 使用示例：
/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">一个有效的数据库连接字符串</param>
/// <param name="commandType">SqlCommand命令类型 (存储过程， T-SQL语句， 等等。)</param>
/// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
/// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
/// <returns>返回一个包含结果的SqlDataReader</returns>
public static SqlDataReader ExecuteReader(CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = ConnectionManger.GetConnection();
// 在这里使用try/catch处理是因为如果方法出现异常，则SqlDataReader就不存在，
//CommandBehavior.CloseConnection的语句就不会执行，触发的异常由catch捕获。
//关闭数据库连接，并通过throw再次引发捕捉到的异常。
try
{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return(rdr);
}
catch
{
conn.Close();
conn.Dispose();
throw;
}
}
private StringBuilder builder = new StringBuilder();//避免在事件处理方法中反复的创建，定义到外面。
private void ParameterSet_Load(object sender, EventArgs e)
{
ConnectionManger.readxml();
string[] ports = SerialPort.GetPortNames();
Array.Sort(ports);
comboBox1.Items.AddRange(ports);
model_com.Items.AddRange(ports);
yb_Com.Items.AddRange(ports);
comboBox1.Text = ConnectionManger.Card_Com;
comboBox2.Text = ConnectionManger.Card_Baudrate;
txt_video1.Text = ConnectionManger.strvideo1;
txt_video2.Text = ConnectionManger.strvideo2;
txt_video3.Text = ConnectionManger.strvideo3;
txt_video4.Text = ConnectionManger.strvideo4;
model_com.Text = ConnectionManger.Model_Com;
model_txt.Text = ConnectionManger.Model_Com_Send_Txt;
model_baute.SelectedIndex = 0;
comboBox3.Text = "1";
yb_Com.Text = ConnectionManger.Yibiao_Com;
yb_baute.Text = ConnectionManger.Yibiao_Baute;
txt_ledip.Text = ConnectionManger.led_IP;
txt_ledwight.Text = ConnectionManger.led_wight.ToString();
txt_ledheight.Text = ConnectionManger.led_height.ToString();
try
{
comm.BaudRate = int.Parse(ConnectionManger.Card_Baudrate);
comm.PortName = ConnectionManger.Card_Com;
if (!comm.IsOpen)
{
comm.Open();
}
//添加事件注册
comm.DataReceived += comm_DataReceived;
}
catch (Exception ex)
{ }
//根据当前串口对象，来判断操作
if (comm_model.IsOpen)
{
//打开时点击，则关闭串口
comm_model.Close();
}
else
{
try
{
//关闭时点击，则设置好端口，波特率后打开
comm_model.PortName = ConnectionManger.Model_Com;
comm_model.BaudRate = 9600;
comm_model.Open();
}
catch (Exception ex)
{
//捕获到异常信息，创建一个新的comm对象，之前的不能用了。
comm_model = new SerialPort();
}
//添加事件注册
//comm_model.DataReceived += comm_DataReceived_Model;
}
}
