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运行效果:解决方案:MainForm.cs public partial class MainForm : Form { public MainForm() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { CProvincialCapital proCap = new CProvincialCapital("南京市", 10000000); ... 阅读全文
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private BindingManagerBase bm1 = null; private BindingManagerBase bm2 = null; private void DataScanInForm2_Load(object sender, EventArgs e) { string sqlString1 = "select * from 客户"; string sqlString2 = "select * from 订单"; string[] sqlStrings... 阅读全文
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/// <summary> /// 获取Access数据库中的所有用户表的名称 /// </summary> /// <returns></returns> public static List<string> GetUserTableNames() { OleDbConnection connection = new OleDbConnection(AccessHelper.ConnectionString); connection.Open(); ... 阅读全文
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来自:http://cache.baidu.com/c?m=9d78d513d99003ed4fece4690d61c0676905dd3f688c85027ea48439e4732a47501692ac53550705a3d20c6016de4f4beb802103401450c78cbe8c5dacba866f6fd6286e365ac45613a004b28e1c7e8777d501b5b81990e9aa63ccf9c5d3a8050fd7025826c6a7d71c1714bd3cb1567bf4a7ed13434811ccee3764fd53702c952947b043&p 阅读全文
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来自:http://blog.sina.com.cn/s/blog_005547d70100xcuf.htmlADO.NET命名规范数据类型数据类型简写标准命名举例ConnectionconconNorthwindCommandcmdcmdReturnProductsParameterparmparmProductIDDataAdapterdaddadProductsDataReaderdtrdtrProductsDataSetdstdstNorthWindDataTabledtbldtblProductDataRowdrowdrowRow98DataColumndcoldcolProduct 阅读全文
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来自:http://www.cnblogs.com/weiming/archive/2011/12/28/2304937.html1.可选参数 可选参数是.NET4中新添加的功能,应用可选参数的方法在被调用的时可以选择性的添加需要的参数,而不需要的参数由参数默认值取代。?class Program{/// <summary>/// 可选参数 命名参数/// </summary>static void Main(string[] args){Console.WriteLine(ShowComputer());Console.WriteLine(ShowComputer(& 阅读全文
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解决办法:在项目中添加System.Configuration引用。 阅读全文
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private void Form1_Load(object sender, EventArgs e) { //定义一个表,并添加数据 DataTable tbl = new DataTable(); DataColumn c1 = new DataColumn("c1"); DataColumn c2 = new DataColumn("c2"); DataColumn c3 = new DataColumn("c3"); tbl.Columns.... 阅读全文
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理解委托:关于两个窗体的互操作Form1: public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void frm_setTextEvent(string text) { this.Text = text; } private void button1_Click(object sender, EventArgs e) { Form2 frm = new Form2(); frm.setTextEvent += new Form2.setTextHandler(frm_setT 阅读全文
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新建了一个项目,引用了一下自己写的一个应用程序,结果遇见两个警告:警告1未能解析引用的程序集“E:\Develop\ShaftCAD\bin\ShaftCAD.exe”,因为它对不在当前目标框架“.NETFramework,Version=v4.0,Profile=Client”中的“System.Web, Version=4.0.0.0... 阅读全文