我用一个简单的解决方法解决了我的问题SQLite sqlite3_column_origin_name function,但现在我又遇到了另一个大问题。SQLite3.dll问题x64
我已经与这些进口sqlwrapper:
[DllImport("sqlite3.dll", EntryPoint = "sqlite3_column_int")]
static extern int sqlite3_column_int(IntPtr stmHandle, int iCol);
[DllImport("sqlite3.dll", EntryPoint = "sqlite3_column_text")]
static extern string sqlite3_column_text(IntPtr stmHandle, int iCol);
[DllImport("sqlite3.dll", EntryPoint = "sqlite3_column_double")]
static extern double sqlite3_column_double(IntPtr stmHandle, int iCol);
,这是我的executeQuery功能:
public DataTable ExecuteQuery(String query)
{
SQLiteWrapper.query = query;
if (!_open)
throw new SQLiteException("SQLite database is not open.");
//prepare the statement
IntPtr stmHandle = IntPtr.Zero;
try
{
stmHandle = Prepare(query);
}
catch(Exception e)
{
Log.e(e.Message);
return null;
}
// Prevensione sul out of memory
if(stmHandle == IntPtr.Zero)
{
return null;
}
//get the number of returned columns
int columnCount = sqlite3_column_count(stmHandle);
DataTable dTable = null;
try
{
//create datatable and columns
dTable = new DataTable();
for (int i = 0; i < columnCount; i++)
{
try
{
ArrayList selections = Utils.getQuerySelection(query);
foreach(String s in selections)
{
dTable.Columns.Add(s);
}
//Workaround for sqlite3_column_origin_name
//dTable.Columns.Add("_id");
//dTable.Columns.Add(sqlite3_column_origin_name(stmHandle, i));
}
catch(Exception e)
{
}
}
//populate datatable
while (sqlite3_step(stmHandle) == SQLITE_ROW)
{
object[] row = new object[columnCount];
for (int i = 0; i < columnCount; i++)
{
switch (sqlite3_column_type(stmHandle, i))
{
case SQLITE_INTEGER:
// WORKS CORRECTLY!!!!
row[i] = sqlite3_column_int(stmHandle, i);
break;
case SQLITE_TEXT:
// ERROR!!!!!!!!!!!!!!!!!!!!!!
row[i] = sqlite3_column_text(stmHandle, i);
break;
case SQLITE_FLOAT:
row[i] = sqlite3_column_double(stmHandle, i);
break;
}
}
dTable.Rows.Add(row);
}
}
catch(AccessViolationException ave)
{
Log.e("SqliteWrapper - AccessViolationException - " + ave.Message + ":" + query);
return null;
}
// Se ci sono stati errori allora torna null e ritenta la query
Boolean finalized = Finalize(stmHandle);
if(!finalized)
{
return null;
}
return dTable;
}
当我调用sqlite3_column_text(......)我的应用程序崩溃。 我已经探索了dll文件中的函数,并且存在这个入口点“sqlite3_column_text”。
我可以解决我的问题吗?
编辑:我从http://sourceforge.net/projects/sqlite-dotnet2/files/SQLite%20for%20ADO.NET%202.0/1.0.66.0/
文件下载我sqlite3.dll文件是/斌/ 64位之内,我已重新命名为sqlite3.dll
编辑2:点击更多的信息,我有:
文件澈contribuiscono阿拉descrizione德尔problema:
C:\用户\ Utente \应用程序数据\本地的\ Temp \ WERB927.tmp.WERInternalMetadata.xml C:\用户\ Utente \应用程序数据\本地的\ Temp \ WERD59D.tmp.appcompat.txt
C:\用户\ Utente \应用程序数据\本地的\ Temp \ WERD5BD.tmp.mdmpLeggere L'informativa苏拉在线隐私:
http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0410硒L'informativa苏拉在线隐私不èdisponibile, leggere 克亚离线:C:\ WINDOWS \ SYSTEM32 \ IT-IT \ erofflps.txt
“我能解决我的问题?”也许。第一步是告诉我们一些比“我的应用崩溃”更丰富的信息。 –
你是对的。但我没有任何错误,正如http://stackoverflow.com/questions/6759198/sqlite-sqlite3-column-origin-name-function – CeccoCQ
如果列为空可能会返回一个空例外,检查出 – V4Vendetta