那个英文提示的意思是变量rs没有被初始化，你应该在申明以后把它初始化，给你看一段连接oracle数据库的代码，是我以前做项目时照着一本书一个一个字母敲下来的，应该没有错误，你可以参考一下 package firm;import java.sql.*;public class firm { String sDBDrive ="sun.jdbc.odbc.JdbcOdbcDrive"...
程序看不懂，英文意思是 变量dwFileSize没被初始化。是不是你在出入这段程序之前没有清空？
out.println(s); // Error:(36, 32) java: variable s might not have been initialized } However, in this case if the variable b is marked final then it does compile successfully. Contributor paul1956 commented Aug 1, 2015 Even in the simplest case the compiler insists the variable be in...
DTS_E_COULDNOTCREATECOPYBUFFER Field DTS_E_COULDNOTFINDINPUTBUFFERCOLUMNBYLINEAGE Field DTS_E_COULDNOTGETCOLUMNINFOFORCOPYBUFFER Field DTS_E_COULDNOTGETCOLUMNINFOFORINPUTBUFFER Field DTS_E_COULDNOTREGISTERCOPYBUFFER Field DTS_E_COULDNOTREPLACECHECKPOINTFILE Field DTS_E_COULDNOTRESOLVEPACKAGEPATH Field DTS...
DTS_E_EXPREVALSTATIC_CONDITIONALOPDTSTRNOTSUPPORTED DTS_E_EXPREVALSTATIC_CONDITIONALOPERATIONFAILED DTS_E_EXPREVALSTATIC_CONDITIONALOPINVALIDCONDITIONTYPE DTS_E_EXPREVALSTATIC_CONDITIONALOPSETTYPEFAILED DTS_E_EXPREVALSTATIC_CONDITIONALOPTYPEMISMATCH DTS_E_EXPREVALSTATIC_DATACONVERSIONFAILED DTS_E_EXPREVALSTATIC_DA...
It might not exist in the correct scope. Verify that the variable exists and that the scope is correct. 命名空間: Microsoft.SqlServer.Dts.Runtime 組件: Microsoft.SqlServer.ManagedDTS (在 Microsoft.SqlServer.ManagedDTS.dll 中) 語法 C# 複製 public const int DTS_E_EXPREVALSTATIC_VARIABLENOTFOUND ...
Connection property has not been initialized. C# Find specific slot no of the USB Hub(10 slots) where USB is connected or not. I want to get the specific slot no where USB is connected or not. C# FindWindow() - Get multiple windows. C# FIREWALL BLOCKS SOCKETS C# for loop multiple ...
initialized in each branch of a big sequence ofif/elif/etc. blocks, where you want to declare its type before entering the firstif, and there's no convenient initial value (e.g.Noneis not valid because the type is notOptional[...]). So I propose to allow leaving out the assignment:...
I’m not an expert but let’s see if my current knowledge match the standard: 1) a) w is a default-initialized widget; b) w is a free function returning a widget; c) w is a default-initialized widget; d) w is a widget constructed using x, which have to be a compatible type ...
If you do not put them all at the top, you never know where another variable might be declared, and it might take you longer to track down a bug related to a variable.Copy Private Sub ScopeTest() Dim intValue As Integer intValue = 10 MsgBox("intValue = " & _ intValue) ' ...