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.51obj.cn/
/// E-mail:walkingp@126.com
///

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;
    }
}