This post is going to help you in learning how to do basic SharePoint List operations (CRUD – Create, Read, Update and Delete) using SharePoint Management Shell or Windows PowerShell.

Lets open SharePoint Management Shell or open Windows PowerShell.When we are working on SharePoint Server there are two possibilities exists: either select the SharePoint Management Shell or Open Windows PowerShell.If We are using SharePoint Management Shell then SharePoint snap-in will already be installed.If you are using Standard PowerShell console, we can install the snap-in by entering the following command:

Add-PSSnapIn Microsoft.SharePoint.PowerShell

we can check the list of installed snap-in by using this command

Get-PSSnapIn

So, here is my list like below screenshot.

1) Create Item into SharePoint List

$webURL="http://optimumview"
$lstName="DemoList"
$oWeb=Get-SPWeb -Identity $webURL
$oList=$oWeb.Lists[$lstName]
$oListItem = $oList.items.add()
$oListItem["Title"]="Test-Item-0"
$oListItem["DemoLocation"]="US"
$oListItem["ProjectName"]="POW-JO-09"
$oListItem.Update()

2) Read single list item

$webURL="http://optimumview"
$lstName="DemoList"
$oWeb=Get-SPWeb -Identity $webURL
$oList=$oWeb.Lists[$lstName]
#To read single item uncomment below code
#$oListItem = $oList.GetItemById("1")
#Read multiple list item
$oListItem = $oList.Items | where {$_['ProjectName'] -like "IND1*"}
if($oListItem -ne $null)
{
$oListItem | ForEach-Object {
Write-Host $_['ID'] -foregroundcolor green
Write-Host $_['Title'] -foregroundcolor green
Write-Host $_['DemoLocation'] -foregroundcolor green
Write-Host $_['ProjectName'] -foregroundcolor green
}
}
else
{
Write-Host "No Items are found !!" -foregroundcolor red
}

3) Update SharePoint List item

#Update multiple list item

$webURL="http://optimumview"
$lstName="DemoList"
$oWeb=Get-SPWeb -Identity $webURL
$oList=$oWeb.Lists[$lstName]
$oListItem = $oList.Items | where {$_['ProjectName'] -like "IND*"}
if($oListItem -ne $null)
{
$oListItem | ForEach-Object {
$_['Title']="Test1" + $_['ID']
Write-Host "Item id:" $_['ID'] " has been updated!" -foregroundcolor green
$_.Update()
}
}
else
{
Write-Host "No Items are found !!" -foregroundcolor red
}

4) Deleting SharePoint List item

#Deleting multiple list item
$webURL="http://optimumview"
$lstName="DemoList"
$oWeb=Get-SPWeb -Identity $webURL
$oList=$oWeb.Lists[$lstName]
$oListItem = $oList.Items | where {$_['ProjectName'] -like "GLT*"}
if($oListItem -ne $null)
{
$oListItem | ForEach-Object {
$_.Delete()
Write-Host "Item id:" $_['ID'] " has been Deleted!" -foregroundcolor green
}
}
else
{
Write-Host "No Items are found !!" -foregroundcolor red
}