本文整理汇总了C#中IDbCommand.TryExecuteReader方法的典型用法代码示例。如果您正苦于以下问题：C# IDbCommand.TryExecuteReader方法的具体用法？C# IDbCommand.TryExecuteReader怎么用？C# IDbCommand.TryExecuteReader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IDbCommand的用法示例。
在下文中一共展示了IDbCommand.TryExecuteReader方法的4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: TryExecuteSingletonQuery
private static IDictionary<string, object> TryExecuteSingletonQuery(IDbCommand command)
{
using (var reader = command.TryExecuteReader())
{
if (reader.Read())
return reader.ToDictionary();
}
return null;
} 示例2: Run
public IObservable<IDictionary<string, object>> Run(IDbCommand command, IDbConnection connection, IDictionary<string, int> index)
{
try
{
connection.OpenIfClosed();
}
catch (DbException ex)
{
throw new AdoAdapterException(ex.Message, ex);
}
var reader = command.TryExecuteReader();
if (index == null) index = reader.CreateDictionaryIndex();
return ColdObservable.Create<IDictionary<string, object>>(o => RunObservable(command, connection, reader, index, o));
}示例3: ExecuteReader
public IEnumerable<ResultSet> ExecuteReader(IDbCommand command)
{
command.Connection.OpenIfClosed();
using (var reader = command.TryExecuteReader())
{
// Reader isn't always returned - added check to stop NullReferenceException
if ((reader != null) && (reader.FieldCount > 0))
{
return reader.ToMultipleDictionaries();
}
// Don't call ExecuteReader for this function again.
_executeImpl = ExecuteNonQuery;
return Enumerable.Empty<ResultSet>();
}
}示例4: TryExecuteSingletonQuery
private static IDictionary<string, object> TryExecuteSingletonQuery(IDbConnection connection, IDbCommand command, IDictionary<string, int> index)
{
using (connection.MaybeDisposable())
using (command)
{
connection.OpenIfClosed();
using (var reader = command.TryExecuteReader())
{
if (reader.Read())
{
return reader.ToDictionary(index);
}
}
}
return null;
}