[英]Inserting multiple rows into html table ASP.Net
我有一個查詢,可以根據某些定義的條件選擇行。 一旦發生這種情況,我就會有一個讀者來獲取使用的值。 我的問題是如何使讀者返回到代碼頁背后的ASP.Net的行數可變? 還可以獲取單個行,而不僅僅是第一行。 我不確定是否需要設置櫃台或說實話該怎么辦。 如何將這些可變數量的行放入適當的標簽中? 如果您想查看任何代碼,請告訴我。
DBHelper類,其中:
private DBHelper() { }
public static SqlConnection getConnection()
{
return new SqlConnection(ConfigurationManager.ConnectionStrings["Connection"].ConnectionString);
}
public static SqlConnection getFRESHConnection()
{
return new SqlConnection(ConfigurationManager.ConnectionStrings["FRESHConnection"].ConnectionString);
}
public static SqlDataReader executeQuery(SqlConnection dbConn, string sqlString, SqlParameter[] parameters)
{
SqlCommand cmd = null;
SqlDataReader reader = null;
try
{
if (dbConn.State == ConnectionState.Closed)
dbConn.Open();
cmd = dbConn.CreateCommand();
cmd.CommandText = sqlString;
if (parameters != null)
{
cmd.Parameters.AddRange(parameters);
}
reader = cmd.ExecuteReader();
cmd.Dispose();
}
catch (Exception ex)
{
throw ex;
}
return reader;
}
數據類:
public class LineAData
{
public int CaseNum6;
public int CaseNum9;
public int Group;
public bool Completed;
public int WorkID;
public void load(int Group1, int Group2)
{
StringBuilder sqlString = new StringBuilder();
sqlString.Append("SELECT WorkID, CaseNum6, CaseNum9, Group, Completed ");
sqlString.Append("FROM WorkOrder ");
sqlString.Append("WHERE Group = @Group1 OR Group = @Group2 ");
sqlString.Append("AND Completed = '0' ");
SqlDataReader reader = null;
SqlConnection dbConn = DBHelper.getConnection();
SqlParameter[] parameters = new SqlParameter[] { new SqlParameter("@Group1", Group1 ),
new SqlParameter("@Group2", Group2) };
try
{
reader = DBHelper.executeQuery(dbConn, sqlString.ToString(), parameters);
if (reader != null)
{
if (reader.Read())
{
WorkID = (int)(reader["WorkID"]);
CaseNum6 = (int)(reader["CaseNum6"]);
CaseNum9 = (int)(reader["CaseNum9"]);
Group = (int)(reader["Group"]);
Completed = (bool)reader["Completed"];
}
else
throw new Exception("No record returned");
reader.Close();
reader.Dispose();
dbConn.Close();
dbConn.Dispose();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (dbConn != null)
{
try { dbConn.Close(); dbConn.Dispose(); }
catch { }
}
if (reader != null)
{
try { reader.Close(); reader.Dispose(); }
catch { }
}
}
}
創建一個存儲以下字段的類:
public class Class1
{
public int WorkId { get; set; }
public int CaseNum6 { get; set; }
public int CaseNum9 { get; set; }
public int Group { get; set; }
public bool Completed { get; set; }
}
然后代替使用if (reader.Read())
使用while(reader.read())
List<Class1> myList = new List<Class1>();
while(reader.read())
{
// assign the reader values to your class
myClass obj = new myClass();
obj.WorkId= reader["WorkId"]
obj.CaseNum6 = reader["CaseNum6"]
// do for all fields
// add to the list
myList.Add(obj)
}
現在,“ myList”中存儲了可變數量的結果!
當然,請記住關閉閱讀器或將其包裝在using語句中。
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