SQLServerConnect.ExecuteNonQuery(insertsql); } 注意:SqlStringHelper.MakeInsertSql拼接sql语句可以使用,ExecuteNonQuery为执行非查询类的sql语句下面一并给出相关函数: SqlStringHelper.MakeInsertSql方法: 1publicstaticstringMakeInsertSql(string[] fields,string[] values,stringtable)2{3stringstrInsertFld ="";4string...
c.ReasonCode=MqttConnectReasonCode.ClientIdentifierNotValid;return; }if(c.Username !="Username")//用户名{ c.ReasonCode=MqttConnectReasonCode.BadUserNameOrPassword;return; }if(c.Password !="PassWord")//用户名{ c.ReasonCode=MqttConnectReasonCode.BadUserNameOrPassword;return; } OnMessage($"{c.Cl...
using System; using System.Data; using MySql.Data.MySqlClient; using System.Windows; namespace WPFMySQLExample { public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); ConnectToMySQL(); } private void ConnectToMySQL() { string connectionString = "Server=localhost...
Connect to sql via ip adress.C# Connecting C# application to online SQL Server database Connecting PostgreSql to C# windows forms Connecting to Remote Server (Linux) from .NET application(C#) to run a UNIX script hosted on linux server Connecting to remote server outlook.office365.com failed wi...
string sql = "select * from students"; MySqlCommand cmd = new MySqlCommand(sql, connect); connect.Open(); MySqlDataReader mdr = cmd.ExecuteReader(); List<ClassInfo> classinfo = new List<ClassInfo>(); while (mdr.Read()) { classinfo.Add(new ClassInfo() { Id = Convert.ToInt32(mdr...
How to insert image from image control into WPF to SQL Database using entity data model how to insert image in to WPF windows? How to instantiate an interface from a dynamically loaded assembly? How to invert the colors of a WPF custom control How to invoke Application.Current.Dispatcher?
问WPF应用程序中有多个Datagrid，但一次仅显示一个EN问题似乎出在您的c#代码中。您在每个条件中都使用了...
远程连接mysql数据库时出现如下提示信息:“MYSQL CONNECT ERROR – 1130:Host ’202.43.**.**’ is not allowed to connect to this MySQL server” 原来在创建mysql账户是,限制连接账户远程登录。也就是说,除了当前mysql所在的安装服务器外,其他的ip(主机)都是不允许访问的,尽管你的用户名和密码是正确的 连接...
C#和WPF中的ListBox是ListBoxItems的集合。本教程中的代码示例演示了如何添加列表框项、将项添加到ListBox、从ListBox中删除项以及将ListBox绑定到数据源。 <ListBox></ListBox> Width和Height属性表示ListBox的宽度和高度。Name属性表示控件的名称,它是控件的唯一标识符。Margin属性告诉ListBox在父控件上的位置。Hor...
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