Created
December 21, 2016 20:39
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CSOM code to delete all items from a SharePoint list
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private void deleteAllFromList(ClientContext cc, List myList) | |
{ | |
int queryLimit = 4000; | |
int batchLimit = 100; | |
bool moreItems = true; | |
string viewXml = string.Format(@" | |
<View> | |
<Query><Where></Where></Query> | |
<ViewFields> | |
<FieldRef Name='ID' /> | |
</ViewFields> | |
<RowLimit>{0}</RowLimit> | |
</View>", queryLimit); | |
var camlQuery = new CamlQuery(); | |
camlQuery.ViewXml = viewXml; | |
while (moreItems) | |
{ | |
ListItemCollection listItems = myList.GetItems(camlQuery); // CamlQuery.CreateAllItemsQuery()); | |
cc.Load(listItems, | |
eachItem => eachItem.Include( | |
item => item, | |
item => item["ID"])); | |
cc.ExecuteQuery(); | |
var totalListItems = listItems.Count; | |
if (totalListItems > 0) | |
{ | |
Console.WriteLine("Deleting {0} items from {1}...", totalListItems, myList.Title); | |
for (var i = totalListItems - 1; i > -1; i--) | |
{ | |
listItems[i].DeleteObject(); | |
if (i % batchLimit == 0) | |
cc.ExecuteQuery(); | |
} | |
cc.ExecuteQuery(); | |
} | |
else | |
{ | |
moreItems = false; | |
} | |
} | |
Console.WriteLine("Deletion complete."); | |
} |
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Saved my day!