我有一个清单:
a = ['a','b','c'.........'A','B','C'.........'Z']
我有字符串:
string1= 's#$%ERGdfhliisgdfjkskjdfW$JWLI3590823r'
我想只保留那些string1存在的角色a
这样做最有效的方法是什么？或许不是a一个列表,我应该只是使它成为一个字符串？像这样a='abcdefg..........ABC..Z'？
我正在运行从visual studio 2008到sql server 2008连接的脚本
我建立时收到此消息:
to debug this project you must enable sql/clr debugging for the connection. note that during debugging all managed threads on the server will stop.
鉴于我在这台服务器上有其他数据库,这样做有危险吗？
我正在研究一个只是一个测试数据库的特定数据库 - 这个msg是否意味着该服务器上的所有其他数据库也可能受到影响？
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void txtTestPrime_Click(object sender, EventArgs e)
{
TestPrime myNumber = new TestPrime();
lblAnswer.Text =
myNumber.TestPrime(ToInt16(txtTestPrime.Text)) ? "it is prime!" : "it is NOT prime!";
}
}
public class TestPrime(int number)
{
bool prime;
}
它不喜欢这一行:
public class TestPrime(int number)
我收到此错误:无效的标记'('在类,结构或接口成员声明中
也expect { and ;走上了那条线
也在这一行:
myNumber.TestPrime(ToInt16(txtTestPrime.Text)) ? "it is prime!" : "it is NOT prime!";
我得到错误4'WindowsFormsApplication1.TestPrime'不包含'TestPrime'的定义,并且没有可以找到接受类型'WindowsFormsApplication1.TestPrime'的第一个参数的扩展方法'TestPrime'(你是否缺少using指令或程序集引用？)
也许这是我做错的一件大事.请帮忙!
这是我的连接字符串:
// Initialize a connection string
string myConnectionString =
"Provider=SQLOLEDB;Data Source=hermes;Initial Catalog=qcvaluestest;
Integrated Security=SSPI;";
我如何在数据库中创建一个表并在其中插入行？
我有一个构造函数:
public Form1(string startDate, string endDate, string cbQCValues,string cbAnalytes, string cbInstruments,bool copy_of_form)
{
InitializeComponent();
dateStart.Value = Convert.ToDateTime(startDate);
dateEnd.Value = Convert.ToDateTime(endDate);
GenerateGraph();
}
我也有一个onLoad
private void Form1_Load(object sender, EventArgs e)
{
string qcvalues_query = "SELECT DISTINCT name FROM qvalues ORDER by name";
string analytes_query = "SELECT DISTINCT compound FROM qvalues ORDER by compound";
string instruments_query = "SELECT DISTINCT instrument FROM batchinfo WHERE instrument <> '' AND instrument is not Null ORDER by instrument";
...
...
}
什么先被执行？我需要确保首先执行onLoad
这是真的吗？
我循环一个看起来像这样的函数:
Y=exp(-0.04*(x-13.25)^(2))*300
假设我想获得Y每个值x在3.3454和20.3458之间的每个值0.1 interval
我会这样做:
for (float i=3.3454;i<20.3458;i=+.1)
这是正确的方法吗？
这是我的数据:
liza
liza
liza
alex
alex
alex
liza
我想用每个名称的每次出现的数据更新此表,如下所示:
liza 4
liza 4
liza 4
alex 3
alex 3
alex 3
liza 4
到目前为止我有:
update table set column2=count(name) group by name
非常感谢你的帮助
我正在使用c#更新sql server 2008数据库,如下所示:
foreach (DataRow row in dt.Rows)
{
faxstatus = row.ItemArray[5].ToString().Contains("0000") ? "Faxed" : "Error";
query =
@"update FileLog set
FaxStatus=" + "'" + faxstatus + "'," +
"FaxedPageCount=" + "'" + row.ItemArray[1] + "'," +
"dtFaxed=" + "'" + row.ItemArray[2] + "'," +
"BiscomCode=" + "'" + row.ItemArray[5] + "', " +
"RetryCount=" + "'" + row.ItemArray[4] + "' " +
"where CONVERT(VARCHAR(255), JobID) =" + "'" + row.ItemArray[3] + "'" +
" and FaxStatus<>'Faxed'";
command = new …我想在web.config中添加一些键:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<add key="dePracticeErrors" value="agordon,user1,user2,user3"/>
<add key="dePreAnalytical" …我有一个表单和一个按钮形式:
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="SubmitData" />
我的c#程序中有一个方法.该方法被调用SubmitData
但是我也想在这个按钮点击上运行一个javascript函数.我该怎么做呢？
这是我的javascript函数:
var selectedLanguages = new Array();
jQuery('#lstProblems option:selected').each(function() {
selectedLanguages.push(jQuery(this).val());
});
我从这里得到它:jquery listbox返回用户选择的内容
我怎么运行它？我必须把它放进<script></script>去做一些功能(等等......)？