先生,
创建了一个activity page,并声明了System.Data.SqlClient将其与MSSQL连接。然后我声明了SqlConnection类,但它将错误显示为The type or namespace name 'SqlConnection' could not be found (are you missing a using directive or an assembly reference?)
下面是.xaml代码:
<?xml version="1.0" encoding="utf-8"?>
<Lin
当对FETCH使用Npgsql库时,我找不到任何方法将游标ref作为参数传递给PostgreSQL命令。这个是可能的吗?
using (DbConnection connection = new NpgsqlConnection(connectionString))
{
connection.Open();
using (DbTransaction transaction = connection.BeginTransaction())
{
var outCursor = new NpgsqlParameter("cursor", Npg
我正在使用python,我有这样的数据:
RedHat Enterprise Linux ES 2.1 IA64
RedHat Enterprise Linux ES 2.1
Red Hat Enterprise Linux AS 2.1
Linux kernel 2.6.9
Linux kernel 2.6.8 rc3
Linux kernel 2.6.8 rc1
+ Ubuntu Ubuntu Linux 4.1 ppc
+ Ubuntu Ubuntu Linux 4.1 ia64
Linux kernel 2.6.8
我想把这个信息存储在一个json file.but
嗨,我一直在努力寻找解决这个问题的方法,但我找不到。我需要安装模块'IO::EventMux',所以我使用:
cpan[1]> install IO::EventMux
然而,我得到了以下错误:
Catching error: "CPAN::Exception::yaml_process_error=HASH(0xe34ed78)" at /usr/local/share/perl/5.14.2/CPAN.pm line 392
CPAN::shell() called at /usr/local/share/perl/5.14.2/App/Cpa
我有点卡住了,还是个初学者。在升级过程中,我的dev/sda1 1似乎达到了容量。
sudo apt-get autoremove
给我:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
linux-image-extra-4.4.
我按照指令从这个答案(https://stackoverflow.com/questions/39928340/how-to-start-an-android-emulator-in-ubuntu-16-04)运行AVD仿真器。
在运行sudo apt-get install lib64stdc++6:i386时,我会得到以下错误:-
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. Thi
正在设置后缀,但没有取得太大进展,因为Ubuntu返回了一个依赖项错误。
我试图解决这个问题,但我找不到问题的原因。
dpkg: dependency problems prevent configuration of linux-image-extra-3.13.0-43-generic:
linux-image-extra-3.13.0-43-generic depends on
linux-image-3.13.0-43-generic; however: Package
linux-image-3.13.0-43-generic is not installed.
dpkg: