How to delete large data using XML batch in chunk

Question

public void DeleteListItems(SPWeb web, SPList list)
RMPExceptionManager.LogErrorInFile("--------Delete List Items from : " + list + " starts--------", true);
try
web.AllowUnsafeUpdates = true;
StringBuilder builder = new StringBuilder();
builder.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><Batch>");
string s = "<Method>" +
"<SetList Scope=\"Request\">" + list.ID + "</SetList>" +
"<SetVar Name=\"ID\">{0}</SetVar>" +
"<SetVar Name=\"Cmd\">Delete</SetVar>" +
"</Method>";
foreach (SPListItem item in list.Items)
builder.Append(string.Format(s, item.ID.ToString()));
builder.Append("</Batch>");
web.ProcessBatchData(builder.ToString());
web.AllowUnsafeUpdates = false;
RMPExceptionManager.LogErrorInFile("--------Delete List Items from : " + list + " ends--------", true);
catch (Exception ex)
RMPExceptionManager.LogErrorInFile("--------delete List Items exception--------", bIsLogEnabled);
RMPExceptionManager.LogErrorInFile(ex.Message, bIsLogEnabled);
RMPExceptionManager.LogErrorInFile(ex.Source, bIsLogEnabled);
RMPExceptionManager.LogErrorInFile(ex.StackTrace, bIsLogEnabled);
RMPExceptionManager.LogErrorInFile("-------------------------------------------------------", bIsLogEnabled);
I am using the above code to delete the data from list.
currently its not deleting properly as its executing huge xml batch.
How can I change the above code in to chunk of 1000 so that I can delete 25000 records easily?

Answer 1

I tried the below code but its not working properly.
first time when it comes in do loop its deleting the records one by one and not using batch of 1000.
after some time(aprox 30 min) it starts executeing batch of 1000 but not deleting whole records. out of 10,000 its deleting hardly 7000 then stops the delete process and jumps on next step.
I am not getting why its showing this behaivour ? Is it time out after some time in xml batch? but its still executing the other code after comming out of delete function.
web.AllowUnsafeUpdates = true;
StringBuilder builder = new StringBuilder();
builder.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><Batch>");
string s = "<Method>" +
"<SetList Scope=\"Request\">" + list.ID + "</SetList>" +
"<SetVar Name=\"ID\">{0}</SetVar>" +
"<SetVar Name=\"Cmd\">Delete</SetVar>" +
"</Method>";
// Query to get the unprocessed items.
SPQuery query = new SPQuery();
query.RowLimit = 1000;
query.Query = "<Where></Where>";
do
SPListItemCollection remainingItems = list.GetItems(query);
foreach (SPListItem item in remainingItems)
builder.Append(string.Format(s, item.ID.ToString()));
builder.Append("</Batch>");
web.ProcessBatchData(builder.ToString());
query.ListItemCollectionPosition = remainingItems.ListItemCollectionPosition;
RMPExceptionManager.LogErrorInFile("--------Delete batch remaining : " + remainingItems.ListItemCollectionPosition + " --------", true);
} while (query.ListItemCollectionPosition != null);
any body got this type of issue?
is there any problem in above code?
is there any other way to do this deletion process in better way?