Powershell connectivity to SQL server and count extract - powershell

Question

I am trying to fetch count of table from SQL server by connecting using Powershell, but I am getting the below error message, but if I just do select on the table instead of count then the same code is returning results, please suggest as I am not getting a solution to this problem.
Error Message:
Exception calling "Fill" with "1" argument(s): "Execution Timeout
Expired. The timeout period elapsed prior to completion of the
operation or the server is not responding."
+ $DataAdapter.Fill($Dataset)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : SqlException
Script:
[string] $Server= "Server_nm"
[string] $Database = "DB_nm"
[string] $UserSqlQuery = $("SELECT count(1) AS cnt FROM [tbl]")
##$resultsDatatable = ExecuteSqlQuery $Server $Database $UserSqlQuery
function GenericSqlQuery ($Server, $Database, $SQLQuery) {
$Datatable = New-Object System.Data.DataTable
$Connection = New-Object System.Data.SQLClient.SQLConnection
$Connection.ConnectionString = "server='$Server';database='$Database';trusted_connection=true;"
$Connection.Open()
$Command = New-Object System.Data.SQLClient.SQLCommand
$Command.Connection = $Connection
$Command.CommandText = $SQLQuery
$DataAdapter = new-object System.Data.SqlClient.SqlDataAdapter $Command
$Dataset = new-object System.Data.Dataset
$DataAdapter.Fill($Dataset)
$Connection.Close()
return $Dataset.Tables[0]
} $resultsDatatable = GenericSqlQuery $Server $Database $UserSqlQuery
#validate we got data
Write-Host ("The table contains: " + $resultsDatatable.Rows.Count + " rows")

Answer 1

You can use the Invoke-Sqlcmd function instead.
# initialize Variables
[string] $Server= "Server_nm"
[string] $Database = "DB_nm"
[string] $UserSqlQuery = $("SELECT count(1) AS cnt FROM [tbl]")
# Invoke-SqlCmd
$resultsDatatable = Invoke-Sqlcmd -ServerInstance $Server -Database $Database -Query $UserSqlQuery
# validate we got data
Write-Host ("The table contains: " + $resultsDatatable.cnt + " rows")