在Form的构造方法中加入 Control.CheckForIllegalCrossThreadCalls =false; (不推荐) Private void UpdateControl(string msg) { Action<string> act = (x)=>{this.controlA.Text = x; } if(controlA.InvokeRequired) { this.controlA.Invoke(act, msg); } else{ act(); } } 使用BackgroundWorker组件(...
对函数的命名特别注意动词的准确性,比如:CheckXXX、GetXXX不应对数据做任何修改。 7. 避免不同层次间的变量重名。 intcount;...voidMyMethod(){if(condition){intcount=0;// 避免...}} 8. 在业务逻辑里,如果遇到策划设计的具有中国特色的词汇,宁可用汉语拼音,也不要用难以理解的英语翻译。 函数 1. 避免函...
说明:如果分配成功则返回指向被分配内存的指针,否则返回空指针NULL。 当内存不再使用时,应使用free()函数将内存块释放。 举例: [c-sharp]view plaincopy #include<stdio.h> #include<malloc.h> int main() { char *p; p=(char *)malloc(100); if(p) printf(“Memory Allocated at: %x/n”,p); else...
publicHttpResponseMessageUpdate(JObjectrecordsSr) { varerrMsg=newM_APIError(); try { if(recordsSr==null) { errMsg.ErrorCode=-1; errMsg.Message="recordsSr不能为空"; returnJson.toJson(errMsg); } varstr=recordsSr.ToObject<M_MFItem>(); if(str==null||str.mfItemStr==null||str.mfItemStr...
UseCSharpNullComparisonBehavior 属性 参考 反馈 本文内容 定义 适用于 定义 命名空间: System.Data.Objects 程序集: System.Data.Entity.dll 获取或设置是否用 C# NullComparison 行为的“布尔”值。 C# 复制 public bool UseCSharpNullComparisonBehavior { get...
catch (Excep tion err) /一般情况下关闭串口不会出错,所以不需要加处理程序 private void button3_Click(object sender, EventArgs e)byt e Da ta = new byt e1;/作用同上集if (serialPor t1.Is0pen)/判断串口是否打开,如果打开执行下一步操作 if (textBox2.Text != )/button3.Enabled = true;if (...
Assembly: Microsoft.CodeAnalysis.CSharp.dll Package: Microsoft.CodeAnalysis.CSharp v4.13.0 Source: CSharpCompilation.cs The compilation object is an immutable representation of a single invocation of the compiler. Although immutable, a compilation is also on-demand, and will realize and cache da...
Check whether the task is executed successfully. If successful, returns the results; otherwise returns the error messages.BasicIntVector data = null; if (task.isSuccessful()) { data = (BasicIntVector)task.getResults(); } else { throw new Exception(task.getErrorMsg()); } System.Console.Out...
usingSystem;usingSystem.IO;usingSystem.Globalization;usingSystem.CodeDom.Compiler;usingSystem.Text;usingMicrosoft.CSharp;usingMicrosoft.VisualBasic;namespaceCodeProviders{classCompileSample{ [STAThread]staticvoidMain(string[] args){if(args.Length >0) {// First parameter is the source file name.if(File...
// Bad // If labelOfMatchedNode is null, it's not clear which part of the nested LINQ query failed. // diagram.Nodes<OfType>() could return empty or the there were no nodes without bounds.Top > 100. DiagramLabel labelOfMatchedNode = diagram.Nodes.OfType<Add>().Select(x => x....