本文整理汇总了C#中System.Data.SqlClient.SqlConnection.ValidateAndReconnect方法的典型用法代码示例。如果您正苦于以下问题：C# SqlConnection.ValidateAndReconnect方法的具体用法？C# SqlConnection.ValidateAndReconnect怎么用？C# SqlConnection.ValidateAndReconnect使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.SqlClient.SqlConnection的用法示例。
在下文中一共展示了SqlConnection.ValidateAndReconnect方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetSessionAndReconnectIfNeeded
// called by SqlConnection.RepairConnection which is a relatevly expensive way of repair inner connection
// prior to execution of request, used from EnlistTransaction, EnlistDistributedTransaction and ChangeDatabase
internal bool GetSessionAndReconnectIfNeeded(SqlConnection parent, int timeout = 0) {
Debug.Assert(!ThreadHasParserLockForClose, "Cannot call this method if caller has parser lock");
if (ThreadHasParserLockForClose) {
return false; // we cannot restore if we cannot release lock
}
_parserLock.Wait(canReleaseFromAnyThread: false);
ThreadHasParserLockForClose = true; // In case of error, let the connection know that we already own the parser lock
bool releaseConnectionLock = true;
try {
RuntimeHelpers.PrepareConstrainedRegions();
try {
#if DEBUG
TdsParser.ReliabilitySection tdsReliabilitySection = new TdsParser.ReliabilitySection();
RuntimeHelpers.PrepareConstrainedRegions();
try {
tdsReliabilitySection.Start();
#endif //DEBUG
Task reconnectTask = parent.ValidateAndReconnect(() => {
ThreadHasParserLockForClose = false;
_parserLock.Release();
releaseConnectionLock = false;
}, timeout);
if (reconnectTask != null) {
AsyncHelper.WaitForCompletion(reconnectTask, timeout);
return true;
}
return false;
#if DEBUG
}
finally {
tdsReliabilitySection.Stop();
}
#endif //DEBUG
}
catch (System.OutOfMemoryException) {
DoomThisConnection();
throw;
}
catch (System.StackOverflowException) {
DoomThisConnection();
throw;
}
catch (System.Threading.ThreadAbortException) {
DoomThisConnection();
throw;
}
}
finally {
if (releaseConnectionLock) {
ThreadHasParserLockForClose = false;
_parserLock.Release();
}
}
}示例2: GetSessionAndReconnectIfNeeded
// called by SqlConnection.RepairConnection which is a relatevly expensive way of repair inner connection
// prior to execution of request, used from EnlistTransaction, EnlistDistributedTransaction and ChangeDatabase
internal bool GetSessionAndReconnectIfNeeded(SqlConnection parent, int timeout = 0)
{
Debug.Assert(!ThreadHasParserLockForClose, "Cannot call this method if caller has parser lock");
if (ThreadHasParserLockForClose)
{
return false; // we cannot restore if we cannot release lock
}
_parserLock.Wait(canReleaseFromAnyThread: false);
ThreadHasParserLockForClose = true; // In case of error, let the connection know that we already own the parser lock
bool releaseConnectionLock = true;
try
{
Task reconnectTask = parent.ValidateAndReconnect(() =>
{
ThreadHasParserLockForClose = false;
_parserLock.Release();
releaseConnectionLock = false;
}, timeout);
if (reconnectTask != null)
{
AsyncHelper.WaitForCompletion(reconnectTask, timeout);
return true;
}
return false;
}
finally
{
if (releaseConnectionLock)
{
ThreadHasParserLockForClose = false;
_parserLock.Release();
}
}
}