Sql Powershell：使用一个下拉框中的选项作为另一个下拉框中的变量

我需要将第一个下拉框的结果存储为变量，并在第二个下拉框中替换INSTANCE_NAME

本质上，第二个框中的SELECT查询需要针对SLQ_实例中的主数据库运行，一旦做出选择，第一个下拉框就会产生主数据库

我尝试了一些变体，但似乎无法正确使用。有什么建议吗

提前谢谢

#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

试图在下面发布当前代码…编辑出错：-，包括Jonathan建议的更改。。。将不得不开始新的职位…对不起

正如我在给Jonathan的评论中提到的，这似乎是正确的，但传递给-serverinstance的任何值似乎都不起作用。它“尝试”连接，但powershell生成一个错误，表明它无法连接到服务器

附加说明-通过添加Get变量命令，我确定为InstanceName传递的值实际上为空

99.9%在那里。。。有什么想法吗？提前再次感谢

通过将$InstanceName=$DropDownBox.SelectedItem命令移动到第二个下拉框下，该进程的aprt现在似乎工作正常。我从第一个下拉列表中选择一个服务器，单击按钮，然后将正确的数据库列表填充到第二个下拉列表中

但是，现在进程底部的$DBName=$DropDownBox2.text语句失败，为db name提供了一个空值。因此，没有备份

仍然在玩变奏曲，但如果有人看到我错过了什么，请告诉我

我假设我需要添加第二个按钮并单击action，以将Box 2的结果设置为db变量，但我在放置方面遇到了问题

是的，…正确地输入了代码

这是一个似乎有效的版本，除了将第二个组合框中的值向下传递到底部的$DBName之外

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
Add-Type -AssemblyName Microsoft.VisualBasic
 
$form = New-Object System.Windows.Forms.Form
 
$image = [System.Drawing.Image]::Fromfile('Path to image')    
$pictureBox = new-object Windows.Forms.PictureBox  #--instantiates a PictureBox
$pictureBox.width=420
$pictureBox.height=420
$pictureBox.top=20
$pictureBox.left=350
$pictureBox.Image=$image
 
#$form.Font = New-Object System.Drawing.Font("Lucida Console",11,[System.Drawing.FontStyle]::Regular)
 
$form = New-Object System.Windows.Forms.Form
$form.Text = 'MSSQL DATABASE BACKUP UTILITY'
$form.Size = New-Object System.Drawing.Size(800,500)
$form.Font = New-Object System.Drawing.Font("Times New Roman",11,[System.Drawing.FontStyle]::Regular)
$form.StartPosition = 'CenterScreen'
$form.Controls.add($pictureBox)
 
$okButton = New-Object System.Windows.Forms.Button
$okButton.Location = New-Object System.Drawing.Point(10,400)
$okButton.Size = New-Object System.Drawing.Size(75,23)
$okButton.Text = 'OK'
$okButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$form.AcceptButton = $okButton
$form.Controls.Add($okButton)
 
#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 Instance 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 DBA -serverinstance INSTANCE_NAME

 
foreach ($wks in $wksList)
    { $DropDownBox.Items.Add($wks.Instance_Name) }
 
$Button = New-Object System.Windows.Forms.Button
$Button.Location = New-Object System.Drawing.Size(10,80)
$Button.Size = New-Object System.Drawing.Size(120,23)
$Button.Text = "Set Instance"

$Form.Controls.Add($Button)

#Add Button event
 $Button.Add_Click(
{   
    #second DROPDOWN Box
    $InstanceName = $DropDownBox.SelectedItem
    $label2 = New-Object System.Windows.Forms.Label
    $label2.Location = New-Object System.Drawing.Point(10,120)
   $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(10,140)
    $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 $InstanceName

    foreach ($wks in $wksList2)
        { $DropDownBox2.Items.Add($wks.name) }

})

#end second DROPDOWN box
 
# third text box
$label3 = New-Object System.Windows.Forms.Label
$label3.Location = New-Object System.Drawing.Point(10,220)
$label3.Size = New-Object System.Drawing.Size(280,20)
$label3.Text = 'Desired Backup Location'
$form.Controls.Add($label3)
 
$textBox3 = New-Object System.Windows.Forms.TextBox
$textBox3.Location = New-Object System.Drawing.Point(10,240)
$textBox3.Size = New-Object System.Drawing.Size(260,20)
$form.Controls.Add($textBox3)
#end third text box
 
# fourth text box
$label4 = New-Object System.Windows.Forms.Label
$label4.Location = New-Object System.Drawing.Point(10,280)
$label4.Size = New-Object System.Drawing.Size(280,20)
$label4.Text = 'Desired Backup Name'
$form.Controls.Add($label4)
 
$textBox4 = New-Object System.Windows.Forms.TextBox
$textBox4.Location = New-Object System.Drawing.Point(10,300)
$textBox4.Size = New-Object System.Drawing.Size(260,20)
$form.Controls.Add($textBox4)
#end fourth text box
 
# fifth text box
$label5 = New-Object System.Windows.Forms.Label
$label5.Location = New-Object System.Drawing.Point(10,340)
$label5.Size = New-Object System.Drawing.Size(280,20)
$label5.Text = 'Your Email Address'
$form.Controls.Add($label5)
 
$textBox5 = New-Object System.Windows.Forms.TextBox
$textBox5.Location = New-Object System.Drawing.Point(10,360)
$textBox5.Size = New-Object System.Drawing.Size(260,20)
$form.Controls.Add($textBox5)
#end fifth text box
 
$form.Topmost = $true
 
$form.Add_Shown({$DropDownBox.Select()})
$result = $form.ShowDialog()
 
if ($result -eq [System.Windows.Forms.DialogResult]::OK)
{
$Server = $DropDownBox.text
$DBName = $DropDownBox2.text
$SharedFolder = $textBox3.text
$BUName = $textBox4.text
$mail = $textBox5.text
 
Get-Variable
 
   <#$Date = Get-Date -format yyyyMMdd#>
Backup-SqlDatabase  -ServerInstance $server `
                    -Database $DBName `
                    -CopyOnly `
                    -CompressionOption on `
                    -BackupFile "$($SharedFolder)\$DBName-$BUName.bak" `
                    -BackupAction Database `
                    -checksum
 
#SMPT Section
 
$From = "SUPPORT EMAIL"
$To = $mail
$Subject = "RECENT MSSQL BACKUP REQUEST"
$Body = "Your MSSQL database backup from $server, $DBName, has been backed up to $SharedFolder. Please check the directory path you specified for your backup. If you have any problems, fwd this email to SUPPORT EMAIL for assistance."
$PSEmailServer = "SMTP SERVER"
 
Send-MailMessage -From $From -To $To -Subject $Subject -Body $Body -SmtpServer $PSEmailserver

---

此示例使用按钮控制工作流。在这种情况下，用户将在第一个下拉框中选择实例。当他们单击按钮时，所选名称将存储在$InstanceName中，可用于第二个下拉列表的查询

$form = New-Object System.Windows.Forms.Form

#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) } 


$InstanceName = $DropDownBox.SelectedItem

$Button = New-Object System.Windows.Forms.Button
$Button.Location = New-Object System.Drawing.Size(10,60)
$Button.Size = New-Object System.Drawing.Size(120,23)
$Button.Text = "Select DB"

$Form.Controls.Add($Button)

#Add Button event 
$Button.Add_Click(
{    
    #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 $InstanceName

    foreach ($wks in $wksList2) 
        { $DropDownBox2.Items.Add($wks) }

})

$form.ShowDialog()

---

替换$InstanceName=$DropDownBox.SelectedItem；使用$DropDownBox.Add_SelectedIndexChanged{$InstanceName=$DropDownBox.SelectedItem；}您就是gtg。

这让我非常接近，谢谢！唯一的问题似乎是将参数传递给第二个SQLCMD命令。它试图连接到服务器以列出数据库，但出现错误。我假设它无法找到在代码更改时传递给它的-serverinstance的值。谢谢，但这会在第二个框中提供一个空白下拉列表，而不是数据库列表。添加$DropDownBox.SelectedIndex=0，在$DropDownBox.Add_SelectedIndexChanged{…}之后。这将选择组合框中的第一个元素并更新$InstanceName。也可以通过$InstanceName=$DropDownBox.SelectedItem手动设置$InstanceName