FieldCount Property (SqlShimDataReader)
On this page
Gets the number of columns in the current row.
Syntax
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'Declaration
Public Overrides ReadOnly Property FieldCount As Integer |
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public override int FieldCount {get;} |
Property Value
When not positioned in a valid record set, 0; otherwise the number of columns in the current record. The default value is -1.
Example
This sample demonstrates how to iterate through fields in a row using
FieldCount property.
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public void FetchResults(BigQueryConnection bigQueryConnection)
{
BigQueryCommand cmd = new BigQueryCommand("SELECT * FROM your_project.your_dataset.employees");
cmd.FetchSize = 100;
cmd.Connection = bigQueryConnection;
bigQueryConnection.Open();
try
{
BigQueryDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
for (int i=0;i<reader.FieldCount;i++)
{
Console.Write("\t"+reader[i]);
}
Console.WriteLine();
}
}
finally
{
bigQueryConnection.Close();
}
} |
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Public Sub FetchResults(ByVal bigQueryConnection As BigQueryConnection)
Dim cmd As BigQueryCommand = New BigQueryCommand("SELECT * FROM your_project.your_dataset.employees")
cmd.FetchSize = 100
cmd.Connection = bigQueryConnection
bigQueryConnection.Open()
Try
Dim reader As BigQueryDataReader = cmd.ExecuteReader()
While reader.Read()
Dim i
For i = 0 To reader.FieldCount - 1
Console.Write(String.Concat(" ", reader(i)))
Next i
Console.WriteLine()
End While
Finally
bigQueryConnection.Close()
End Try
End Sub |
See Also
