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xtreme toolkit pro——CXTPReportControl控件教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...现消息映射函数，如下：
//表中焦点行改变时的事件（包括用鼠标单击和用键盘的方向键）
void CWEReportDlg::OnReportFocusChanging(NMHDR * pNotifyStruct, LRESULT * /*result*/)
{
XTP_NM_REPORTRECORDITEM* pItemNotify = (XTP_NM_REPORTRECORDITEM*) pNotifyStruct;
i...
Why would you use Expression rather than Func?
...trees and look inside them instead of executing them. For example, LINQ to SQL gets the expression and converts it to the equivalent SQL statement and submits it to server (rather than executing the lambda).
Conceptually, Expression<Func<T>> is completely different from Func<T>. F...
SQL Server: Filter output of sp_who2
Under SQL Server, is there an easy way to filter the output of sp_who2? Say I wanted to just show rows for a certain database, for example.
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搜狗百度入口之争升级 开放竞合成流量变现抓手 - 资讯 - 清泛网 - 专注C/C+...
...诉的主要原因。
其实将输入法和搜索结合已经很常见，包括百度输入法、谷歌输入法、必应输入法等都采取了类似做法。不过同上面几个不同的是，使用其他输入法跳转某搜索会有明确的提示，用户误触率几乎为零。而搜狗“...
Preserving order with LINQ
... @Amy B yes but it doesn't apply to Linq to Objects. In Linq to Sql, distinct() puts the distinct keyword into the generated sql, and ordering from sql is not guaranteed. I'd be interested to see an implementation of distinct for linq to objects that doesn't preserve order and is more ef...
How to solve privileges issues when restore PostgreSQL Database
...mments this should not be used in production:
root@server:/var/log/postgresql# sudo -u postgres psql
psql (8.4.4)
Type "help" for help.
postgres=# \du
List of roles
Role name | Attributes | Member of
-----------------+-------------+-----------
<user-name> | Superus...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
...ues.
The only way to do specifically what you're asking is to use dynamic SQL. This is, however, something I'd encourage you to stay away from. The solution above will almost certainly be sufficient for what you're after.
s...
“A lambda expression with a statement body cannot be converted to an expression tree”
...
Is objects a Linq-To-SQL database context? In which case, you can only use simple expressions to the right of the => operator. The reason is, these expressions are not executed, but are converted to SQL to be executed against the database.
Try...
FAT32系统中长文件名的存储 - C/C++ - 清泛网 - 专注C/C++及内核技术
...名的环境中对短文件名中的文件名和扩展名字段作更改(包括删除，因为删除是对首字符改写E5H)，都会使长文件名形同虚设。
（长文件名如何与短文件名对应？仅靠她们之间的位置关系？）
长文件名和短文件名之间的联系...
MySQL 'create schema' and 'create database' - Is there any difference
...etween the create schema command and the create database command for MySQL.
6 Answers
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