为什么文本框不将信息传递到变量中？

编程问答 2022-08-12

问题描述

好吧，我几乎可以按照我需要的方式来工作。最后一件事...而不是为我的每个技术人员更改脚本中的用户名...我想使用一个文本框，他们可以输入用户名..现在我将其设置的方式连接到交换机但是它要求输入的密码不是PIN＆PASSCODE，就像我在脚本中保留用户名时通常那样。

#############
# Variables #
#############

$form1 = New-Object System.Windows.Forms.Form
$comboBox1 = New-Object System.Windows.Forms.ComboBox
$label1 = New-Object System.Windows.Forms.Label
$button1 = New-Object System.Windows.Forms.Button
$username = New-Object System.Windows.Forms.TextBox
$label2 = New-Object System.Windows.Forms.Label


###########################################################
#                        FORM LAYOUT                      #
###########################################################
$CBEvent_SelectedindexChanged = {
    $label1.Text = $comboBox1.SelectedItem.Address.ToString()
  
}

$InitialFormWindowState = New-Object System.Windows.Forms.FormWindowState

$System_Drawing_Size = New-Object System.Drawing.Size
$System_Drawing_Size.Width = 292
$System_Drawing_Size.Height = 266
$form1.ClientSize = $System_Drawing_Size

###################
# Label1 Location #
###################

$System_Drawing_Point = New-Object System.Drawing.Point
$System_Drawing_Point.X = 125
$System_Drawing_Point.Y = 5

###################
# Label2 Location #
###################

$System_Drawing_Point3 = New-Object System.Drawing.Point
$System_Drawing_Point3.X = 130
$System_Drawing_Point3.Y = 50

###################
# Button Location #
###################

$System_Drawing_Point1 = New-Object System.Drawing.Point
$System_Drawing_Point1.X = 157
$System_Drawing_Point1.Y = 140

######################
# TextBox1 Location  #
######################

$System_Drawing_Point2 = New-Object System.Drawing.Point
$System_Drawing_Point2.X = 150
$System_Drawing_Point2.Y = 110

#############
# Control's #
#############

$label1.Location = $System_Drawing_Point
$label1.Text = 'Select Switch'
$label2.Location = $System_Drawing_Point3
$label2.Text = 'Enter NEMA Account'
$form1.Controls.Add($label1)
$form1.Controls.Add($comboBox1) 
$form1.Controls.Add($button1)
$form1.Controls.Add($username)
$username.Location = $System_Drawing_Point2
$button1.Location = $System_Drawing_Point1
$button1.Text = 'Connect'
$button1.Add_Click({cmd /c start powershell -Command ssh $username@$($label1.Text)})
$form1.add_Load($FormEvent_Load)
$ComboBox1.add_SelectedindexChanged($CBEvent_SelectedindexChanged)
$form1.ShowDialog()| Out-Null

尤其是这行... $button1.Add_Click({cmd /c start powershell -Command ssh $username@$($label1.Text)}) 不工作。

$button1.Add_Click({cmd /c start powershell -Command ssh domain\myusername@$($label1.Text)}) 工作

其作用类似于用户名吗？我在正确的道路上吗？

感谢您的帮助！

解决方法

至此...

为什么文本框不将信息传递给变量？

...好吧，您根本没有使用文本框。

这是不正确的... 

$button1.Add_Click({cmd /c start powershell -Command ssh $username@$($label1.Text)})

...您实际上是在要求标签显示文本而不是在组合框中选择的内容。

从UX / UI的角度来看，从用户交互表单元素中获取文本，然后将该文本分配给UX标签，然后从该label元素中调用结果文本是不正确或谨慎的。

您从用户交互表单元素（文本框，组合框，数据网格等）中获取文本内容

您不使用标签控件来托管用户交互式提供的数据。它们只是横幅信息，指示应在用户交互表单元素中输入/选择的内容。

例如：

# sample form with,no label elements,just interactive elements,combobox selection to richtextbox

Add-Type -AssemblyName System.Drawing

$ComboBox          = New-Object System.Windows.Forms.ComboBox
$ComboBox.Location = New-Object System.Drawing.Point(10,10)
$ComboBox.Items.AddRange(@('One','Two'))


$RichTextBox          = New-Object System.Windows.Forms.RichTextBox
$RichTextBox.Location = New-Object System.Drawing.Point(10,40)

$Form                 = New-Object System.Windows.Forms.Form
$Form.Controls.Add($ComboBox)
$Form.Controls.Add($RichTextBox)

$ComboBox.Add_TextChanged({

    # Code here
    switch($ComboBox.Text){
    "One" {$RichTextBox.Text = "This is one"}
    "Two" {$RichTextBox.Text = "This is two"}

    }

})

$Form.ShowDialog()

因此，仅针对交互式结果，即可快速解决您的GUI问题... 

#############
# Variables #
#############

$form1     = New-Object System.Windows.Forms.Form
$combobox1 = New-Object System.Windows.Forms.ComboBox
$label1    = New-Object System.Windows.Forms.Label
$button1   = New-Object System.Windows.Forms.Button
$username  = New-Object System.Windows.Forms.TextBox
$label2    = New-Object System.Windows.Forms.Label


###########################################################
#                        FORM LAYOUT                      #
###########################################################
$CBEvent_SelectedIndexChanged = {
    $combobox1.SelectedItem

}

$InitialFormWindowState = New-Object System.Windows.Forms.FormWindowState

$System_Drawing_Size = New-Object System.Drawing.Size
$System_Drawing_Size.Width = 292
$System_Drawing_Size.Height = 266
$form1.ClientSize = $System_Drawing_Size

###################
# Label1 Location #
###################

$System_Drawing_Point = New-Object System.Drawing.Point
$System_Drawing_Point.X = 125
$System_Drawing_Point.Y = 5

###################
# Label2 Location #
###################

$System_Drawing_Point3 = New-Object System.Drawing.Point
$System_Drawing_Point3.X = 130
$System_Drawing_Point3.Y = 50

###################
# Button Location #
###################

$System_Drawing_Point1 = New-Object System.Drawing.Point
$System_Drawing_Point1.X = 157
$System_Drawing_Point1.Y = 140

######################
# Textbox1 Location  #
######################

$System_Drawing_Point2 = New-Object System.Drawing.Point
$System_Drawing_Point2.X = 150
$System_Drawing_Point2.Y = 110

#############
# Control's #
#############

$label1.Location = $System_Drawing_Point
$label1.Text     = 'Select Switch'

$combobox1.Items.AddRange(@('Switch1','Switch2'))

$label2.Location = $System_Drawing_Point3
$label2.Text     = 'Enter NEMA Account'

$form1.Controls.Add($label1)
$form1.Controls.Add($combobox1) 
$form1.Controls.Add($button1)
$form1.Controls.Add($username)

$username.Location = $System_Drawing_Point2

$button1.Location = $System_Drawing_Point1
$button1.Text     = 'Connect'
$button1.Add_Click({
    "$($username.Text)@$($combobox1.Text)" | Out-Host
})

# $form1.add_Load($FormEvent_Load) # you are not using this anywhere,so,not needed.

$ComboBox1.add_SelectedIndexChanged($CBEvent_SelectedIndexChanged)

$form1.ShowDialog()| Out-Null

但是，我不得不说，您确实应该使用拖放设计器来帮助您安排UX / UI工作，而不是硬编码。 UX / UI最佳实践中还有其他地方不合时宜。

使用以下方法查看：https://poshgui.com，或使用免费的Visual Studio 2019社区版，还有其他一些。另请参见YouTube上的“ Windows窗体”和“ WPF窗体”开发视频，以获取更多示例/指导。

,

这是完整的工作代码，您可以随意使用它，只需更改开关信息和nema帐户下的值即可。

代码：

[reflection.assembly]::loadwithpartialname("System.Windows.Forms") | Out-Null
[reflection.assembly]::loadwithpartialname("System.Drawing") | Out-Null

#############
# Variables #
#############

$form1 = New-Object System.Windows.Forms.Form
$combobox1 = New-Object System.Windows.Forms.ComboBox
$combobox2 = New-Object System.Windows.Forms.ComboBox
$label1 = New-Object System.Windows.Forms.Label
$label2 = New-Object System.Windows.Forms.Label
$button1 = New-Object System.Windows.Forms.Button


##################################################################
#            SWITCH INFORMATION - SWitch Combo Box               #
##################################################################
$FormEvent_Load = {
##################################################################################################################### Basement
$combobox1.DisplayMember = 'Name'
    $combobox1.Items.Add(
        [PSCustomObject]@{
            'Name' = '******BASEMENT******'
            })
    $combobox1.DisplayMember = 'Name'
    $combobox1.Items.Add(
        [PSCustomObject]@{
            'Name' = 'GA- GC105C'
            'Address' = [ipaddress]::Parse('10.10.10.100')
        })
  
}

##################################################################
#         NEMA INFORMATION - NEMA COMBOBOX                       #
##################################################################

$FormEvent_Load2 = {
$combobox2.DisplayMember = 'Name'
    $combobox2.Items.Add(
        [PSCustomObject]@{
            'Name' = 'Aaron'
            'UserName' = ('domain\useracct')
        })
        }

###########################################################
#                        FORM LAYOUT                      #
###########################################################
$CBEvent_SelectedIndexChanged = {
    $label1.Text = $combobox1.SelectedItem.Address.ToString()
    }
  
$CBEvent_SelectedIndexChanged2 = {
    $label2.Text = $combobox2.SelectedItem.Username.ToString()
    }

$InitialFormWindowState = New-Object System.Windows.Forms.FormWindowState

$System_Drawing_Size = New-Object System.Drawing.Size
$System_Drawing_Size.Width = 292
$System_Drawing_Size.Height = 266
$form1.ClientSize = $System_Drawing_Size

###################
# Label1 Location #
###################

$System_Drawing_Point = New-Object System.Drawing.Point
$System_Drawing_Point.X = 125
$System_Drawing_Point.Y = 5

###################
# Label2 Location #
###################

$System_Drawing_Point3 = New-Object System.Drawing.Point
$System_Drawing_Point3.X = 150
$System_Drawing_Point3.Y = 85

###################
# Button Location #
###################

$System_Drawing_Point1 = New-Object System.Drawing.Point
$System_Drawing_Point1.X = 157
$System_Drawing_Point1.Y = 140

#######################
# combo box2 Location #
#######################

$System_Drawing_Point2 = New-Object System.Drawing.Point
$System_Drawing_Point2.X = 150
$System_Drawing_Point2.Y = 110


#############
# Control's #
#############

$form1.Controls.Add($combobox1)
$form1.Controls.Add($combobox2)
$form1.Controls.Add($label1)
$form1.Controls.Add($label2)
$form1.Controls.Add($button1)
$combobox2.Location = $System_Drawing_Point2
$label1.Location = $System_Drawing_Point
$label1.Text = 'Select Switch:'
$label2.Location = $System_Drawing_Point3
$label2.Text = 'Select NEMA Account:'
$button1.Location = $System_Drawing_Point1
$button1.Text = 'Connect'
$button1.Add_Click({cmd /c start powershell -Command ssh -l $($label2.Text)@$($label1.Text)})
$form1.add_Load($FormEvent_Load)
$form1.add_Load($FormEvent_Load2)
$ComboBox1.add_SelectedIndexChanged($CBEvent_SelectedIndexChanged)
$ComboBox2.add_SelectedIndexChanged($CBEvent_SelectedIndexChanged2)
$form1.ShowDialog()| Out-Null
powershellpowershellsshsshsshtextboxtextbox