Use choice from one drop down box as variable in another

[Mark Dickinson Participant Topics: 2 Replies: 0 Points: 12Rank: Member]

I need to get the results of the first DROPDOWN box stored as a variable, and used in place of INSTANCE_NAME in the second DROPDOWN box.

Essentially, the SELECT query from the second box needs to be run against the MASTER database in the SLQ_INSTANCE that the first DROPDOWN box results in once a choice has been made.

I’ve tried a few variations and can’t seem to get it right. Any suggestions?

Thanks in advance!

#first DROPDOWN Box
$label = New-Object System.Windows.Forms.Label
$label.Location = New-Object System.Drawing.Point(10,20)
$label.Size = New-Object System.Drawing.Size(280,20)
$label.Text = 'SQL Server Name'
$form.Controls.Add($label)
$DropDownBox = New-Object System.Windows.Forms.ComboBox
$DropDownBox.Location = New-Object System.Drawing.Size(10,40)
$DropDownBox.Size = New-Object System.Drawing.Size(260,20)
$DropDownBox.DropDownHeight = 200
$Form.Controls.Add($DropDownBox)
$wksList= invoke-sqlcmd -query "select * from VIEW_NAME
order by instance_name" -database DATABASE_NAME -serverinstance INSTANCE_NAME
foreach ($wks in $wksList) {
                      $DropDownBox.Items.Add($wks.Instance_Name)
                              } #end foreach
#end first DROPDOWN box
#second DROPDOWN Box
$label2 = New-Object System.Windows.Forms.Label
$label2.Location = New-Object System.Drawing.Point(10,90)
$label2.Size = New-Object System.Drawing.Size(280,20)
$label2.Text = 'Database Name'
$form.Controls.Add($label2)
$DropDownBox2 = New-Object System.Windows.Forms.ComboBox
$DropDownBox2.Location = New-Object System.Drawing.Size(10,110)
$DropDownBox2.Size = New-Object System.Drawing.Size(260,20)
$DropDownBox2.DropDownHeight = 200
$Form.Controls.Add($DropDownBox2)
$wksList2= invoke-sqlcmd -query "select name from sys.databases
where database_id>4
order by name" -database MASTER -serverinstance INSTANCE_NAME
foreach ($wks in $wksList2) {
                     $DropDownBox2.Items.Add($wks.name)
                            } #end foreach
#end second DROPDOWN box

 

[Rob Simmers Participant Topics: 13 Replies: 1690 Points: 2,876Rank: Community Hero]

Take a look at this example;

$DropDownBox.DropDownHeight = 200
$Form.Controls.Add($DropDownBox)

#second DROPDOWN Box
$label2 = New-Object System.Windows.Forms.Label
$label2.Location = New-Object System.Drawing.Point(10,90)
$label2.Size = New-Object System.Drawing.Size(280,20)
$label2.Text = 'Database Name'
$form.Controls.Add($label2)

$DropDownBox2 = New-Object System.Windows.Forms.ComboBox
$DropDownBox2.Location = New-Object System.Drawing.Size(10,110)
$DropDownBox2.Size = New-Object System.Drawing.Size(260,20)
$DropDownBox2.DropDownHeight = 200
$Form.Controls.Add($DropDownBox2)

function Load-DrpDwn {
    $DropDownBox2.Items.Clear()

    $wksList2= Get-Process -Name $script:mDb
    foreach ($wks in $wksList2) {
        [void]$DropDownBox2.Items.Add($wks.name)
    } #end foreach
    #end second DROPDOWN box

    $DropDownBox2.SelectedIndex = 0
}

#Load dropdown servers
$wksList = Get-Process
foreach ($wks in $wksList) {
    [void]$DropDownBox.Items.Add($wks.Name)
}

#Set first item in list
$DropDownBox.SelectedIndex = 0
#Set script variable for selected item
$script:mDB = $DropDownBox.SelectedItem

#A better way to do this is https://info.sapien.com/index.php/guis/gui-controls/spotlight-on-the-combobox-control
#But quick and dirty, we want to create a function to dynamically clear and load the second dd because it will get
#called initially on load and again when something changes in dd1
Load-DrpDwn

#Event for when something is selected to update dd2
$DropDownBox_SelectedIndexChanged = {
   $script:mDB = $DropDownBox.SelectedItem
   Load-DrpDwn
}

$DropDownBox.add_SelectedIndexChanged($DropDownBox_SelectedIndexChanged)

$form.ShowDialog()

[Author]

Posts