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所以在C#中,我有一個ODBCDataReader返回它有行,但是當我嘗試訪問數據時,它返回的對象沒有設置爲對象錯誤的引用。我直接在數據庫上測試了sql,它確實返回了一行而沒有任何空值。ODBCDataReader有行但無法訪問數據
OdbcDataReader results;
try
{
// Initialize & open odbc connection
using (OdbcConnection conn = new OdbcConnection(connectionString.ToString()))
{
conn.Open();
// Initialiaze odbc command object
using (OdbcCommand comm = new OdbcCommand(query.ToString(), conn))
{
results = comm.ExecuteReader();
}
}
}
catch
{
//detailed error messaging here (which does not get hit)
}
temp = results;
if (temp.HasRows == false)
{
//error messaging here does not get hit.
}
while (temp.Read())
{
try
{
//I attempted to access the data by creating an object array:
object [] objarray = new object[temp.FieldCount)
temp.GetValues(objarray); //this causes error
}
catch{ // error is caught here "object not set to a reference of an object" }
for (i = 0; i < temp.FieldCount; i++)
{
try
{
//I also attempted other ways to access the data including:
temp[i].ToString(); // this causes error
temp.GetInt32(i).ToString(); // this causes error
temp.GetName(i); //this causes error
}
catch
{
// error is caught here "object not set to a reference of an object"
}
}
}
我試圖發佈答案,但它沒有出現,所以我會在這裏嘗試。問題不在代碼中(它工作正常),這是數據庫同步問題。 – user2904607