System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(); if (con.State == ConnectionState.Open()) { Response.Write("连接成功!"); }
using System.Data; using System.Data.SqlClient;string connectionString = "xxxxxxxxxxxx"; SqlConnection con = new SqlConnection(connectionString); try { ConnectionState.Open(); } catch { Response.Write("连接失败!"); }
有个错误,纠正一下: System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(); if (con.State == ConnectionState.Open) { Response.Write("连接成功!"); } else if (con.State == ConnectionState.Broken) { Response.Write("连接失败!"); }
public static bool checkDBConnection(string Server, string User, string Password)
{
StringBuilder constr = new StringBuilder();
constr.Append("server=");
constr.Append(Server);
constr.Append(";database=master");
constr.Append(";user id=");
constr.Append(User);
constr.Append(";password=");
constr.Append(Password);
SqlConnection conn = new SqlConnection(constr.ToString());
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
try
{
conn.Open();
return true;
}
catch (Exception er)
{
throw new Exception(er.Message);
}
finally
{
conn.Close();
}
}
SqlConnection con = new SqlConnection(connectionString); try { ConnectionState.Open(); } catch { Response.Write("连接失败!"); }
if (con.State == ConnectionState.Open())
{
Response.Write("连接成功!");
}
using System.Data.SqlClient;string connectionString = "xxxxxxxxxxxx";
SqlConnection con = new SqlConnection(connectionString);
try
{
ConnectionState.Open();
}
catch
{
Response.Write("连接失败!");
}
System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection();
if (con.State == ConnectionState.Open)
{
Response.Write("连接成功!");
}
else if (con.State == ConnectionState.Broken)
{
Response.Write("连接失败!");
}
{
StringBuilder constr = new StringBuilder();
constr.Append("server=");
constr.Append(Server);
constr.Append(";database=master");
constr.Append(";user id=");
constr.Append(User);
constr.Append(";password=");
constr.Append(Password);
SqlConnection conn = new SqlConnection(constr.ToString());
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
try
{
conn.Open();
return true;
}
catch (Exception er)
{
throw new Exception(er.Message);
}
finally
{
conn.Close();
}
}
try
{
ConnectionState.Open();
}
catch
{
Response.Write("连接失败!");
}