本文主要为广大网友提供“asp.net管理mysql数据库的小工具”，希望对需要asp.net管理mysql数据库的小工具网友有所帮助，学习一下!
在asp.net 中，可以通过MySQL.Data.dll来操作mysql数据库，写法跟操作SQL数据库类似，下面是相关的例子。
一、打开mysql数据库：
MySqlConnection DBConn = new MySqlConnection();
string connString ="Host=127.0.0.1;UserName=root;PassWord=root;Database=test;Port=3306;CharSet=utf8;Allow Zero Datetime=true";
DBConn.ConnectionString = connString;
DBConn.Open();
二、执行sql命令
string sqlstr="select * from test";
MySqlCommand command = new MySqlCommand(sqlstr, DBConn);
command.ExecuteNonQuery();
从上面可以看出，用法跟操作SQL数据库的SqlConnection、SqlCommand非常相似，下面我这里有一个完整的例子来实现对mysql数据库进行管理，包括浏览表结构和数据、查询-修改-插入-删除数据，导出数据和表结构等，供大家参考和互相学习。代码写得不规范，还请大家指正。
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Text" %>
<%@ Import Namespace="MySql.Data.MySqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>shouji138.com MYSQL Manager (DoNet)</title>
<style type="text/CSS">
body,td{font: 12px Arial,Tahoma;line-height: 16px;}
.input{font:12px Arial,Tahoma;background:#fff;border: 1px solid #666;padding:2px;height:18px;}
.area{font:12px ''Courier New'', Monospace;background:#fff;border: 1px solid #666;padding:2px;}
.bt {border-color:#b0b0b0;background:#3d3d3d;color:#ffffff;font:12px Arial,Tahoma;height:22px;}
a {color: #00f;text-decoration:underline;}
a:hover{color: #f00;text-decoration:none;}
.alt1 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f1f1f1;padding:5px 10px 5px 5px;}
.alt2 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f9f9f9;padding:5px 10px 5px 5px;}
.focus td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#ffffaa;padding:5px 10px 5px 5px;}
.head td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#e9e9e9;padding:5px 10px 5px 5px;font-weight:bold;}
.head td span{font-weight:normal;}
form{margin:0;padding:0;}
h2{margin:0;padding:0;height:24px;line-height:24px;font-size:14px;color:#5B686F;}
ul.info li{margin:0;color:#444;line-height:24px;height:24px;}
u{text-decoration: none;color:#777;float:left;display:block;width:150px;margin-right:10px;}
p,div
{
line-height:260%;
}
</style>
<script runat="server">
PRivate string m_Admin = "shouji138.com";
MySqlConnection DBConn = new MySqlConnection();
private string connString = string.Empty;
DataTable tblsDt = null;
int tblRowsCount = 0;
int tblsCount = 0;
float tblDbSize = 0f;
private bool OpenData()
{
if (session["dbhost"] != null
&& Session["dbuser"] != null
&& Session["dbpass"] != null
&& Session["dbname"] != null
&& Session["dbport"] != null
&& Session["charset"] != null
&& Session["dbhost"].ToString().Trim() != string.Empty
&& Session["dbuser"].ToString().Trim() != string.Empty
&& Session["dbpass"].ToString().Trim() != string.Empty
&& Session["dbname"].ToString().Trim() != string.Empty
&& Session["dbport"].ToString().Trim() != string.Empty
&& Session["charset"].ToString().Trim() != string.Empty
)
{
connString = string.Format("Host = {0}; UserName = {1}; Password = {2}; Database = {3}; Port = {4};CharSet={5};Allow Zero Datetime=true",
Session["dbhost"].ToString().Trim(),
Session["dbuser"].ToString().Trim(),
Session["dbpass"].ToString().Trim(),
Session["dbname"].ToString().Trim(),
Session["dbport"].ToString().Trim(),
Session["charset"].ToString().Trim()
);
}
if (connString != string.Empty && DBConn.State != ConnectionState.Open)
{
DBConn.ConnectionString = connString;
try
{
DBConn.Open();
}
catch (Exception ex)
{
Response.Write("数据库连接失败，请检查连接字符串！" + ex.Message);
return false;
}
return true;
}
return false;
}
private void CloseData()
{
DBConn.Close();
}
private string FindPK(string tablename)
{
string PKName = string.Empty;
DataTable dt = RunTable("SHOW KEYS FROM " + tablename);
for (int i = 0; i < dt.Rows.Count; i++)
{
if (dt.Rows[i]["Key_name"].ToString().ToUpper() == "PRIMARY")
{
PKName = dt.Rows[i]["Column_name"].ToString();
break;
}
}
return PKName;
}
private DataTable RunTable(string sqlstr)
{
DataTable data = new DataTable();
MySqlDataAdapter da = new MySqlDataAdapter();
try
{
OpenData();
da.SelectCommand = new MySqlCommand(sqlstr, DBConn);
da.Fill(data);
}
catch (Exception ex)
{
Response.Write("执行SQL错误：" + ex.Message + "<br>SQL:" + sqlstr);
Response.End();
}
finally
{
da.Dispose();
DBConn.Close();
}
return data;
}
private void ShowAllTable()
{
string sqlstr = "SHOW TABLE STATUS";
tblsDt = RunTable(sqlstr);
PanTables.Visible = true;
tblRun.Visible = true;
}
private DataTable TableColumn(string tablename)
{
return RunTable("SHOW COLUMNS FROM " + tablename);
}
private DataTable TableStructure(string tablename)
{
return RunTable("SHOW FIELDS FROM " + tablename);
}
private bool isAuto_increment(string tblname, string columnname)
{
DataTable table = TableStructure(tblname);
bool boolIs = false;
for (int i = 0; i < table.Rows.Count; i++)
{
if (table.Rows[i]["Field"].ToString().ToUpper() == columnname.ToUpper())
{
if (table.Rows[i]["Extra"].ToString().ToLower() == "auto_increment")
{
boolIs = true;
break;
}
}
}
return boolIs;
}
private void ShowTableData()
{
PanShow.Visible = true;
tblRun.Visible = true;
sql_query.Value = "SELECT * FROM " + Request.QueryString["tblname"] + " LIMIT 0, 30";
}
private void ShowEditeData()
{
PanelEdit.Visible = true;
tblRun.Visible = true;
sql_query.Value = "SELECT * FROM " + Request.QueryString["tblname"] + " LIMIT 0, 30";
}
private void Structure()
{
PanelStructure.Visible = true;
tblRun.Visible = true;
sql_query.Value = "SELECT * FROM " + Request.QueryString["tblname"] + " LIMIT 0, 30";
}
private void InsertData()
{
PanelInsert.Visible = true;
tblRun.Visible = true;
sql_query.Value = "SELECT * FROM " + Request.QueryString["tblname"] + " LIMIT 0, 30";
}
private void ExportSucc()
{
ShowAllTable();
if (Session["exportinfo"] != null && Session["exportinfo"].ToString()!=string.Empty)
{
lblExport.Text = Session["exportinfo"].ToString();
divSucc.Visible = true;
Session["exportinfo"] = null;
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Session["login"] == null || Session["login"].ToString().Length < 1)
{
PanelLogin.Visible = true;
}
else
{
PanelSucc.Visible = true;
}
if (!Page.IsPostBack)
{
txtpassword.Attributes.Add("onkeydown", "SubmitKeyClick(''btnLogin'');");
InitFrm();
if (OpenData())
{
ShowDBs();
if (Request.QueryString["action"] != null)
{
switch (Request.QueryString["action"].ToString())
{
case "show":
ShowTableData();
break;
case "edit":
ShowEditeData();
break;
case "deldata":
deldataData();
break;
case "insert":
InsertData();
break;
case "structure":
Structure();
break;
case "droptable":
DropTable();
break;
case "exportsucc":
ExportSucc();
break;
}
}
else
{
ShowAllTable();
}
}
}
ShowConnForm();
}
private void InitFrm()
{
if (Session["dbhost"] != null)
dbhost.Value = Session["dbhost"].ToString();
if (Session["dbuser"] != null)
dbuser.Value = Session["dbuser"].ToString();
if (Session["dbpass"] != null)
dbpass.Value = Session["dbpass"].ToString();
if (Session["dbname"] != null)
dbname.Value = Session["dbname"].ToString();
if (Session["dbport"] != null)
dbport.Value = Session["dbport"].ToString();
if (Session["charset"] != null)
{
charset.SelectedIndex = -1;
charset.Items.FindByValue(Session["charset"].ToString()).Selected = true;
}
//value="<%=Server.MapPath("MySQL.sql") %>"
txtSavePath.Value = Server.MapPath(Request.ServerVariables["HTTP_HOST"].Replace(".", "").Replace(":", "") + "MySQL.sql");
}
private void ShowConnForm()
{
PanFrm.Visible = true;
}
protected void connect_ServerClick(object sender, EventArgs e)
{
connString = string.Format("Host = {0}; UserName = {1}; Password = {2}; Database = {3}; Port = {4};CharSet={5};Allow Zero Datetime=true",
dbhost.Value.Trim(),
dbuser.Value.Trim(),
dbpass.Value.Trim(),
dbname.Value.Trim(),
dbport.Value.Trim(),
charset.Value.Trim()
);
Session["dbhost"] = dbhost.Value.Trim();
Session["dbuser"] = dbuser.Value.Trim();
Session["dbpass"] = dbpass.Value.Trim();
Session["dbname"] = dbname.Value.Trim();
Session["dbport"] = dbport.Value.Trim();
Session["charset"] = charset.Value.Trim();
if (OpenData())
{
ShowDBs();
//ShowAllTable();
}
}
private string showSize(float size)
{
if (size > 1024 * 1024)
{
return Math.Round(size / (1024 * 1024), 3) + "M";
}
else if (size > 1024)
{
return Math.Round(size / 1024, 3) + "K";
}
