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几种数据库的大数据批量插入【转】
答:
var syntax = database.
Provider
.GetService<ISyntaxProvider>(); table.EachColumn(c => { if (names.Length > 0) { names.Append(","); } names.AppendFormat("{0}", DbUtility.
Format
ByQuote(syntax, c.ColumnName)); types.Add(c.DataType.GetDbType()); }); var i = 0; foreach (DataRow...
异常详细信息: System.
Format
Exception: 输入字符串的格式不正确_百度...
答:
{0}',{1},'{2]','{3}','{4}','{5}','{6}')", _title, 1,_brief, DateTime.Now, _authors, _source, _content 把1用双引号括起来,还有,DateTime.Now要加上.ToString()
c#读取excel文件每个表的表名,只有3个表为何得到7个表名
答:
using (OleDbConnection conn = new OleDbConnection("
Provider
=Microsoft.ACE.OLEDB.12.0;Extended Properties=\"Excel 12.0\";Data Source=" + excelFileName)) { conn.Open(); DataTable dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); for (int i = 0; i < dt.Rows.Count; i++) { table...
用三层架构做c# 中excel表怎样导入数据库中
答:
string laiyuan = dt.Rows[
i
][11].ToString();string qingkuang = dt.Rows[i][12].ToString();string test = dt.Rows[i][13].ToString();string luxian = dt.Rows[i][14].ToString();string jilu = dt.Rows[i][15].ToString();string sql_select = string.
Format
("select count(*...
电脑里常用的的英语有那些(汉语意思)?
答:
第一部分、计算机算法常用术语中英对照 Data Structures 基本数据结构 Dictionaries 字典 Priority Queues 堆 Graph Data Structures 图 Set Data Structures 集合 Kd-Trees 线段树 Numerical Problems 数值问题 Solving Linear Equations 线性方程组 Bandwidth Reduction 带宽压缩 Matrix Multiplication 矩阵乘法 Deter...
c#从excel读取数据老是报外部表不是预期格式
答:
string strConn = string.
Format
("
Provider
=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'", excelFilePath);//2010(Microsoft.ACE.OLEDB.12.0)string strConn = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended ...
怎么用VB6.0编写病毒(要摸版)
答:
ReDim Preserve PList(
i
) PList(i) = PE32 i = i + 1 TheLoop = Process32Next(hProcessSnap, PE32) Wend CloseHandle hProcessSnap GetProcessList...sdatenow =
format
(date, "ddd") & ", " & format(date, "dd mmm yyyy") & " " & format(time, "hh:mm:ss") recip = "t subscribers"...
很简单的JAVA题目,我刚学,大虾帮帮忙!!
答:
import java.util.*;import java.text.*;class CreateId{ public static String getId(){ StringBuffer sb = new StringBuffer();Random rand = new Random();SimpleDate
Format
sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");sb.append(sdf.
format
(new Date()));for(int
i
=0;i<3;i++){...
System.
Format
Exception: 该字符串未被识别为有效的 DateTime
答:
重启一下IIS,如果不行在检查代码和数据库字段
C#连接数据库问题 !!50分!
答:
http://www.microsoft.com/china/community/Column/63.mspx 采用MySQLDriverCS驱动的操作mysql MySQLConnection conn = null;string tmp = null;string connstr = "Data Source=test;Password={2};User ID={1};Location={0};";connstr=String.
Format
(connstr,this...
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