HasRows Property (SqlShimDataReader)
Gets a value indicating whether the
SqlShimDataReader contains one or more rows.
public override bool HasRows {get;}
'Declaration
Public Overrides ReadOnly Property HasRows As Boolean
Property Value
true if the
SqlShimDataReader contains one or more rows; otherwise,
false.
This sample shows how to optimize reading from a data source using
HasRows property.
public void FetchResults(ZohoDeskConnection ZohoDeskConnection)
{
ZohoDeskCommand cmd = new ZohoDeskCommand("SELECT * FROM Accounts");
cmd.FetchSize = 100;
cmd.Connection = ZohoDeskConnection;
ZohoDeskConnection.Open();
try
{
ZohoDeskDataReader reader = cmd.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{
for (int i=0;i<reader.FieldCount;i++)
{
Console.Write("\t"+reader[i]);
}
Console.WriteLine();
}
}
else
{
Console.WriteLine("No rows detected.");
}
}
finally
{
ZohoDeskConnection.Close();
}
}
Public Sub FetchResults(ByVal ZohoDeskConnection As ZohoDeskConnection)
Dim cmd As ZohoDeskCommand = New ZohoDeskCommand("SELECT * FROM Accounts")
cmd.FetchSize = 100
cmd.Connection = ZohoDeskConnection
ZohoDeskConnection.Open()
Try
Dim reader As ZohoDeskDataReader = cmd.ExecuteReader()
If reader.HasRows Then
While reader.Read()
Dim i
For i = 0 To reader.FieldCount - 1
Console.Write(String.Concat(" ", reader(i)))
Next i
Console.WriteLine()
End While
Else
Console.WriteLine("No rows detected.")
End If
Finally
ZohoDeskConnection.Close()
End Try
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2