dbms_lob.getlength(clob字段)=0表示为空 从网易博客(http://cxwstar.blog.163.com/blog/static/48468763201623112039196/)迁移,原发表于2016年3月3日.

/* { "retCode":1000, "retDetail":"", "retMessage":"调用成功", "retObj":{ "chkInoutProcessLists":{ "chkInoutProcessResponse":[ {"billCode":"JYSZDA00000139","noteInfo":"操作失败。","processDate":"2015-09-10 09:41:14"}, {"billCode":"JYSZDA00000139","noteInfo":"","processD…

using System.Data; using System.Linq; public class Demo { public static DataTable Method(DataTable dt1, DataTable dt2) { var normalReceive = from r2 in dt2.AsEnumerable() where (from r1 in dt1.AsEnumerable() select r1.Field<string>("taskmch") ).Contains(…

List<string> djbhList = new List<string>(); djbhList.Add("JRKBZF00000151"); djbhList.Add("JRKZDA00000152"); djbhList.Add("JRKZDA00000153"); //此方法 string.Join(",", djbhList.ToArray()); //得到结果为 //"JRKBZF00000151,JRKZDA00000152,JRKZDA00000153" //此方法 s…

private static void CopyDir(string path, string newpath) { try {//检查目标目录是否以目录分割字符结束如果不是则添加之 if (newpath[newpath.Length - 1] != System.IO.Path.DirectorySeparatorChar) { newpath += System.IO.Path.DirectorySeparatorChar; } //判断目标目录是否存在如果不存在则创建之 if (!System.IO.Dir…

单击按钮主窗体打开子窗体,并隐藏本身 public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { this.Hide(); Form2 f = new Form2(this); f.Show(); } } 单击按钮子窗体关闭,并显示主窗体 public partial class Form2 : Form {…