///函数
#region 取调用地址
private string GetWebAddress1(string str1)
{
string a;
a = Label_name.Text;
SqlConnection MyConnection = new SqlConnection(myConnectionString);
string cmdText_9 = "select * from users where username='" + str1 + "'"; SqlCommand MyCommand_9 = new SqlCommand(cmdText_9, MyConnection); SqlDataReader dr_9 = null;
try
{
MyConnection.Open();
dr_9 = MyCommand_9.ExecuteReader(CommandBehavior.CloseConnection);
if (dr_9.Read())
{ string add_name = dr_9["realname"].ToString();
return add_name;
}
else
{
return a;
} }
catch (SqlException se)
{
Response.Write(se.Message);
}
finally
{
if (MyConnection.State == ConnectionState.Open)
dr_9.Close();
}
}
#endregion///调用
protected void Button2_Click(object sender, EventArgs e)
{
string a;
/// a = FilterList.Text;
a = Label_name.Text;
/// Response.Redirect('~'+GetWebAddress1(a));
}错误提示; 错误 1 “DataViewFilter.GetWebAddress1(string)”: 并非所有的代码路径都返回值大家知道怎么回事吗? 谢谢!
#region 取调用地址
private string GetWebAddress1(string str1)
{
string a;
a = Label_name.Text;
SqlConnection MyConnection = new SqlConnection(myConnectionString);
string cmdText_9 = "select * from users where username='" + str1 + "'"; SqlCommand MyCommand_9 = new SqlCommand(cmdText_9, MyConnection); SqlDataReader dr_9 = null;
try
{
MyConnection.Open();
dr_9 = MyCommand_9.ExecuteReader(CommandBehavior.CloseConnection);
if (dr_9.Read())
{ string add_name = dr_9["realname"].ToString();
return add_name;
}
else
{
return a;
} }
catch (SqlException se)
{
Response.Write(se.Message);
}
finally
{
if (MyConnection.State == ConnectionState.Open)
dr_9.Close();
}
}
#endregion///调用
protected void Button2_Click(object sender, EventArgs e)
{
string a;
/// a = FilterList.Text;
a = Label_name.Text;
/// Response.Redirect('~'+GetWebAddress1(a));
}错误提示; 错误 1 “DataViewFilter.GetWebAddress1(string)”: 并非所有的代码路径都返回值大家知道怎么回事吗? 谢谢!
{
Response.Write(se.Message);
}
catch里需要返回
return只在try语句成功执行时才会返回在catch块中加上return 语句
To: calmzeal
GetWebAddress1 函数中:
return只在try语句成功执行时才会返回, 但catch块中代表的不是Try失败所要执行的代码快吗? 我把 return 写在catch块中还是会有一样的提示.
To : gui0605
F5 启动调式. 提示我说的出错提示,所以无法进行跟踪
{
....
return null;
}
应该是比较明显的提示
catch也要返回值