[英]C# web service get data from sql server
I connected SQL server database and I using username and password value return xml boolean true. 我连接了SQL Server数据库,并使用用户名和密码值返回xml布尔值true。 But I want to get sicilKod
value according to the results of the username query. 但是我想根据用户名查询的结果获得sicilKod
值。 How can I do it? 我该怎么做?
This returning boolean value according to username and password 根据用户名和密码返回此布尔值
[WebMethod] [WebMethod]
public bool login(string unamePI, string passPI)
{
DataTable mytable = new DataTable();
bool mydeger = false;
mytable = GetTableWithQueryParams("select * from UYE where USERNAME ={0} and PASSWORD={1}", unamePI, passPI);
if (mytable.Rows.Count > 0)
{
mydeger = true;
}
else
{
return mydeger;
}
string de = mytable.Rows[0].ToString();
return mydeger;
}
Database connect: 数据库连接:
public static DataTable GetTableWithQueryParams(string SQLCommandText, params object[] myParametres)
{
string aConnectionString = "Data Source = ..; Initial Catalog = mydatabase; Persist Security Info = True; User ID = ..; Password = ..";
SqlConnection SqlConn = new SqlConnection(aConnectionString);
SqlCommand MyCommand = new SqlCommand("", SqlConn);
DataTable MyTable = new DataTable();
try
{
int i = 0;
SqlConn.Open();
foreach (object MyObject in myParametres)
{
if (SQLCommandText.Contains("{" + i.ToString() + "}"))
{
SQLCommandText = SQLCommandText.Replace("{" + i.ToString() + "}", "@Prm" + i.ToString());
MyCommand.Parameters.AddWithValue("Prm" + i.ToString(), MyObject);
i++;
}
}
MyCommand.CommandText = SQLCommandText;
SqlDataReader MyReader = MyCommand.ExecuteReader();
MyTable.Load(MyReader);
SqlConn.Close();
MyReader.Dispose();
}
catch (Exception ex)
{
throw new Exception(SQLCommandText + "\n" + ex.Message);
}
finally
{
SqlConn.Dispose();
MyCommand.Dispose();
}
return MyTable;
}
change your method to this. 将您的方法更改为此。
public string login(string unamePI, string passPI)
{
DataTable mytable = new DataTable();
string result = "";
mytable = GetTableWithQueryParams("select * from UYE where USERNAME ={0} and PASSWORD={1}", unamePI, passPI);
if (mytable.Rows.Count > 0)
{
result = string.Format("Welcome {0}", mytable.Rows[0]["sicilKod"].ToString());
}
return result;
}
then check if login method return value is empty or not. 然后检查登录方法的返回值是否为空。
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