Exception calling "Open" with "0" argument(s): "Cannot open database "Quanlymanguon" requested by the login. The login 
failed.
Login failed for user 'ladadbm'."
At D:\Media\r_2e87618a.ps1:4 char:1
+ $conn.Open()
+ ~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : SqlException
 
Exception calling "ExecuteReader" with "0" argument(s): "ExecuteReader requires an open and available Connection. The 
connection's current state is closed."
At D:\Media\r_2e87618a.ps1:7 char:1
+ $rd=$cmd.ExecuteReader()
+ ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:9 char:7
+ while($rd.Read()){$cnt++;Write-Output $rd[0]}
+       ~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:10 char:1
+ $rd.Close()
+ ~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
---tables: 0---
Exception calling "ExecuteReader" with "0" argument(s): "ExecuteReader requires an open and available Connection. The 
connection's current state is closed."
At D:\Media\r_2e87618a.ps1:13 char:1
+ $rd=$cmd.ExecuteReader()
+ ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:15 char:7
+ while($rd.Read()){$cols+=$rd[0]+"|"}
+       ~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:16 char:1
+ $rd.Close()
+ ~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
user_cols: 
Exception calling "ExecuteReader" with "0" argument(s): "ExecuteReader requires an open and available Connection. The 
connection's current state is closed."
At D:\Media\r_2e87618a.ps1:19 char:1
+ $rd=$cmd.ExecuteReader()
+ ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:20 char:7
+ while($rd.Read()){$row="";for($i=0;$i -lt $rd.FieldCount;$i++){if($i  ...
+       ~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:21 char:1
+ $rd.Close()
+ ~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
Exception calling "ExecuteScalar" with "0" argument(s): "ExecuteScalar requires an open and available Connection. The 
connection's current state is closed."
At D:\Media\r_2e87618a.ps1:23 char:1
+ $cnt=$cmd.ExecuteScalar()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException
 
---repos: 0---
Exception calling "ExecuteReader" with "0" argument(s): "ExecuteReader requires an open and available Connection. The 
connection's current state is closed."
At D:\Media\r_2e87618a.ps1:26 char:1
+ $rd=$cmd.ExecuteReader()
+ ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:27 char:7
+ while($rd.Read()){$row="";for($i=0;$i -lt $rd.FieldCount;$i++){if($i  ...
+       ~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
You cannot call a method on a null-valued expression.
At D:\Media\r_2e87618a.ps1:28 char:1
+ $rd.Close()
+ ~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull