asp.net Web页执行SQL程序代码

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此功能建议仅供系统管理员在十分熟悉SQL语句的情况下操作，否则可能造成数据库数据丢失。

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网页执行SQL语句程序manageSql.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

///

/// Author:walkingp
/// Web Site:http://www.5*1**obj.cn/
/// E-mail:[email protected]
///

public partial class manage_ManageSQL : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GetTableName();
}
}

#region SqlConnection
///

/// 初始化SqlConnection
///

private static SqlConnection connection;
public static SqlConnection Connection
{
get
{
string connectionString = "server=.;DataBase=model;uid=sa;pwd=;";
if (connection == null)
{
connection = new SqlConnection(connectionString);
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Broken)
{
connection.Close();
connection.Open();
}
return connection;
}
}

///

/// 执行Sql
///

/// Sql
/// 影响记录条数
public static int ExecuteCommand(string safeSql)
{
SqlCommand cmd = new SqlCommand(safeSql, Connection);
int result = cmd.ExecuteNonQuery();
return result;
}
///

/// 执行Sql(overload)
///

/// Sql
/// SqlParameter
/// 影响记录条数
public static int ExecuteCommand(string sql, params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand(sql, Connection);
cmd.Parameters.AddRange(values);
return cmd.ExecuteNonQuery();
}

///

/// 获取DataTable
///

/// Sql
/// DataTable
public static DataTable GetDataSet(string safeSql)
{
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(safeSql, Connection);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
return ds.Tables[0];
}
#endregion

///

/// 获取数据表结构
///

protected void GetTableName()
{
DataTable dt = Connection.GetSchema("Tables", null);
Connection.Close();
grdTable.DataSource = dt;
grdTable.DataBind();
}

///

/// 执行操作
///

///
///
protected void btnExeSql_Click(object sender, EventArgs e)
{
string sql = txtSQL.Text.Trim().ToLower();
int intExeNum;

try
{
if (sql.Substring(0, 6).IndexOf("select") != -1)
{
DataTable dt = GetDataSet(sql);
grdSQL.DataSource = dt;
grdSQL.DataBind();
lblExeNum.Text = "返回记录条数：" + dt.Rows.Count + "";
grdSQL.Visible = true;
}
else if (sql.Substring(0, 6).IndexOf("delete") != -1 || sql.Substring(0, 6).IndexOf("update") != -1 || sql.Substring(0, 8).IndexOf("truncate") != -1)
{
intExeNum = ExecuteCommand(sql);
lblExeNum.Text = "影响行数：" + intExeNum + "";
grdSQL.Visible = false;
}
}
catch (Exception ex)
{
ClientScript.RegisterStartupScript(typeof(string), "", "document.write("

抱歉，系统发生了错误……错误信息：" + ex.Message.Replace(""", "'") + "

")", true);
}
}

///

/// 执行按钮可用
///

///
///
protected void txtSQL_TextChanged(object sender, EventArgs e)
{
btnExeSql.Enabled = true;
}
}