小编Smi*_*Smi的帖子

有谁知道如何在反射中获得该字段的类型？我已经尝试过FieldInfo.Name,其他一些选择也没有成功.
让我们说我正在反思一个int x = 5;
问题是如何获得"system.int32"或"int"字符串.

谢谢

我Page N of M在水晶报告中添加了特殊字段.我想在最后一页和当只有一页时禁止这个字段.

例如,如果只有1页,则Page N of M不应显示该字段.如果有5页,Page N of M则只应显示前4页的字段.

我应该在抑制条件下给予什么来抑制这个字段？

使用下面的代码,我可以显示标题和副标题,我想在其中显示图像.那可能吗？如果是这样,请帮助我.

MKPointAnnotation *aAnnotationPoint = [[MKPointAnnotation alloc] init];

aAnnotationPoint.title = @"Virginia";

aAnnotationPoint.subtitle = @"Test of sub title";

// Add the annotationPoint to the map
[myMapView addAnnotation:aAnnotationPoint];

我正在开发一个小应用程序.我需要在子类中创建三个按钮.一个按钮是add,另一个是search,最后一个是back.我还创建左右按钮.但我无法在导航栏的中心创建搜索按钮.我该如何创建它？我的代码是:

- (void)viewDidLoad 
{
[super viewDidLoad];
UIBarButtonItem *flipButton = [[UIBarButtonItem alloc] initWithTitle:@"Flip"                                            
                                   style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(flipView)];
self.navigationItem.rightBarButtonItem = flipButton;
[flipButton release];

UIBarButtonItem *flipButtons = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Add"                 
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(addbuttonview)];
self.navigationItem.leftBarButtonItem = flipButtons;
[flipButtons release];

}

如何在导航栏中创建中间按钮？请帮我.

这是错误消息:

/Users/JasonJiang/.rvm/rubies/ruby-1.9.2-p290/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/JasonJiang/RubymineProjects/untitled6/script/rails server -b 0.0.0.0 -p 3000 -e development
/Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.7/lib/mysql2.rb:9:in `require': dlopen(/Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.7/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib (LoadError)
Referenced from: /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.7/lib/mysql2/mysql2.bundle
Reason: image not found - /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.7/lib/mysql2/mysql2.bundle
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.7/lib/mysql2.rb:9:in `<top (required)>'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:68:in `require'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:66:in `each'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:66:in `block in require'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:55:in `each'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler/runtime.rb:55:in `require'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.1.rc/lib/bundler.rb:128:in `require'
from /Users/JasonJiang/RubymineProjects/untitled6/config/application.rb:7:in `<top (required)>'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:52:in `require'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:52:in `block in <top (required)>'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:49:in `tap'
from /Users/JasonJiang/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:49:in `<top …

我想添加具有以下字符串值的JSON数据:

json = "d:\xyz\abc";

此值在运行时来自数据库.当我要在datatable中显示它时,会显示JSON格式错误.我的要求是上面的值将显示在数据表中.请帮忙.

我有一个Java程序,它有两个函数和一个静态字符串数组.谁能告诉我如何在Java中声明一个静态字符串数组？

我的下面的PHP代码在浏览器上显示原始大小为300x300的图像.

<?
$location="http://localhost/folwer.bmp ";   
header("Location:  $location");
?>

但我需要在浏览器上将其显示为120x240或任何其他大小.如果不使用PHP调整原始图像大小,我该怎么办呢？请帮忙.

我的下面的代码创建了一个txt文件并将一些内容写入该文件.但是当我多次运行脚本时,我需要在前面的行之后写一个新行.码:

string filePath = "D:\\DOT_NET\\C#\\abc.txt";
FileInfo t = new FileInfo(filePath);
StreamWriter Tex = t.CreateText();
Tex.WriteLine("Hi freinds");
Tex.WriteLine("csharpfriends is the new url for c-sharp");
Tex.Write(Tex.NewLine);
Tex.Close();

abc.txt文件的当前输出:

Hi friends
csharpfriends is the new url for c-sharp

但是如果我多次运行脚本,我需要输出:

Hi friends
csharpfriends is the new url for c-sharp

Hi friends
csharpfriends is the new url for c-sharp

Hi friends
csharpfriends is the new url for c-sharp

我怎样才能做到这一点？请帮忙.

我想更新Oracle表中的以下过程,但它抛出错误:

CREATE OR REPLACE PROCEDURE update_keywords (aKEYWORD IN VARCHAR2, aCOUNT IN NUMBER)
AS BEGIN
   update searchable_keywords  
   set KEYWORD =:new.aKEYWORD or COUNT =:new.aCOUNT 
   where KEUWORD_ID = : old.KEYWORD_ID;
  END;

这是我的程序.我想searchable_keywords用keyword_id(主键)更新表中的关键字和计数,但它抛出错误如下:

LINE/COL ERROR
-------- -----------------------------------------------------------------
3/4      PL/SQL: SQL Statement ignored
4/17     PLS-00049: bad bind variable 'NEW.AKEYWORD'
4/31     PL/SQL: ORA-00933: SQL command not properly ended
4/41     PLS-00049: bad bind variable 'NEW.ACOUNT'

你能帮我解决一下这个问题吗？