一个数据库操作类比较好用

using System;
using System.Text;
using System.Web;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using DataAccess;
using System.Collections;

namespace WebsUI
{
public class DbManage
{
public DbManage()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static DataSet GetDataSet(string sql)
{
return SqlHelper.ExecuteDataset(SqlHelper.ToEposConnString,CommandType.Text,sql);
}
public static DataTable GetDataTable(string sql)
{
DataSet ds = new DataSet();
ds = SqlHelper.ExecuteDataset(SqlHelper.ToEposConnString,CommandType.Text,sql);
if(ds.Tables.Count>0)
return ds.Tables[0];
else
return null;
}
public static DataTable GetDataTable_xml(string tableName)
{
try
{
DataSet ds = new DataSet();
ds.ReadXml(HttpContext.Current.Server.MapPath("../usercontrol/dictionary.xml"));
if(ds.Tables.Contains(tableName))
return ds.Tables[tableName];
else
return null;
}
catch
{
return null;
}
}
public static DataSet GetDataSet_sp(string sql,SqlParameter[] myParams)
{
return SqlHelper.ExecuteDataset(SqlHelper.ToEposConnString,CommandType.StoredProcedure,sql,myParams);
}
public static DataTable GetDataTable_sp(string sql,SqlParameter[] myParams)
{
DataSet ds=new DataSet ();
ds= SqlHelper.ExecuteDataset(SqlHelper.ToEposConnString,CommandType.StoredProcedure,sql,myParams);
if(ds.Tables.Count>0)
{
return ds.Tables[0];
}
else
{
return null;
}
}
public static void ExecuteNonQuery(string sql)
{
SqlHelper.ExecuteNonQuery(SqlHelper.ToEposConnString,CommandType.Text,sql);
}
public static void ExecuteNonQuery_sp(string sql,SqlParameter[] myParams)
{
SqlHelper.ExecuteNonQuery(SqlHelper.ToEposConnString,CommandType.StoredProcedure,sql,myParams);
}
public static void ToExcel(DataGrid ExcelDataGrid)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer= true;
HttpContext.Current.Response.Charset="GB2312";
HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=FileName.xls");
HttpContext.Current.Response.ContentEncoding=System.Text.Encoding.GetEncoding("utf-7");//设置输出流为简体中文
HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。

ExcelDataGrid.EnableViewState = false;
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN",true);
System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
ExcelDataGrid.RenderControl(oHtmlTextWriter);
HttpContext.Current.Response.Write(oStringWriter.ToString());
HttpContext.Current.Response.End();
}
public static object ExecuteScalar(string sql)
{
return SqlHelper.ExecuteScalar(SqlHelper.ToEposConnString,CommandType.Text,sql);
}
public static object ExecuteScalar(string spName, params SqlParameter [] SqlParameters)
{
return SqlHelper.ExecuteScalar(SqlHelper.ToEposConnString,CommandType.StoredProcedure, spName, SqlParameters);
}
public string UrlEncode(string url)
{
return HttpContext.Current.Server.UrlEncode(url.Replace("'","singl[equotes"));
}
public string UrlDecode(string url)
{
return HttpContext.Current.Server.UrlDecode(url.Replace("singl[equotes","'"));
}
public void test(int a,string s)
{
a=10;
s="uuu";
}
public static string DebugDataSet( DataSet _DataSet )
{
if ( _DataSet == null )
{
return "什么都没有";
}
StringBuilder result = new StringBuilder();
foreach ( DataTable table in _DataSet.Tables )
{
result.AppendFormat("{0}\r\n", table.TableName);
result.Append( "<br>" );
DataRowCollection tableRows = table.Rows;
DataColumnCollection tableColumns = table.Columns;
for ( int ctrRow = 0; ctrRow < tableRows.Count; ctrRow++)
{
DataRow row = tableRows[ctrRow] as DataRow;
result.AppendFormat("Row #{0}-\r\n", ctrRow + 1);
result.Append( "<br>" );
object[] rowItems = row.ItemArray;
for (int ctrColumn = 0; ctrColumn < tableColumns.Count; ctrColumn++)
{
DataColumn column = tableColumns[ctrColumn] as DataColumn;
result.AppendFormat("\t{0}: {1}\r\n", column.ColumnName, rowItems[ctrColumn].ToString() );
result.Append( "<br>" );
}
}
result.Append("\r\n");
}
return result.ToString();
}
public static string DebugDataTable( DataTable _DataTable )
{
if ( _DataTable == null )
{
return "什么都没有";
}
StringBuilder result = new StringBuilder();
DataTable table = new DataTable();
table = _DataTable;
result.AppendFormat("{0}\r\n", table.TableName);
result.Append( "<br>" );
DataRowCollection tableRows = table.Rows;
DataColumnCollection tableColumns = table.Columns;
for ( int ctrRow = 0; ctrRow < tableRows.Count; ctrRow++)
{
DataRow row = tableRows[ctrRow] as DataRow;
result.AppendFormat("Row #{0}-\r\n", ctrRow + 1);
result.Append( "<br>" );
object[] rowItems = row.ItemArray;
for (int ctrColumn = 0; ctrColumn < tableColumns.Count; ctrColumn++)
{
DataColumn column = tableColumns[ctrColumn] as DataColumn;
result.AppendFormat("\t{0}: {1}\r\n", column.ColumnName, rowItems[ctrColumn].ToString() );
result.Append( "<br>" );
}
}
result.Append("\r\n");
return result.ToString();
}
public static string ExecuteInsert(DataTable dt)
{
string sql="";
string fieldStr="";
string valueStr="";
int i=0;
try
{
for(i=0;i<dt.Columns.Count;i++)
{
fieldStr += dt.Columns[i].ColumnName + ",";
}
fieldStr = fieldStr.Substring(0,fieldStr.Length-1);
for(i=0;i<dt.Rows.Count;i++)
{
sql = "insert into {0}({1}) values({2})";
valueStr ="";
for(int j=0;j<dt.Columns.Count;j++)
{
switch(System.Type.GetTypeCode(dt.Rows[i][j].GetType()))
{
case System.TypeCode.Byte:
case System.TypeCode.Char:
case System.TypeCode.Decimal:
case System.TypeCode.Double:
case System.TypeCode.Int16:
case System.TypeCode.Int32:
case System.TypeCode.Int64:
case System.TypeCode.SByte:
case System.TypeCode.Single:
case System.TypeCode.UInt16:
case System.TypeCode.UInt32:
case System.TypeCode.UInt64:
valueStr += dt.Rows[i][j].ToString() +",";
break;
case System.TypeCode.DateTime:
case System.TypeCode.String:
valueStr += "'" + dt.Rows[i][j].ToString() +"',";
break;
case System.TypeCode.Boolean:
{
if ((bool)dt.Rows[i][j]==true)
valueStr += "1,";
else
valueStr += "0,";
break;
}
default:
valueStr +=" null,";
break;
}
}
valueStr = valueStr.Substring(0,valueStr.Length-1);
sql = string.Format(sql,dt.TableName,fieldStr,valueStr);
ExecuteNonQuery(sql);
}
return "ok";
}
catch(Exception ex)
{
return ex.Message;
}
}
}
}