CODEWITHSUNDEEP
c#.netlinq
sab669
sab669

Reputation: 4104

LINQ Invalid arguments for Collections.Generic.List.RemoveAll

I have this method which is telling me I have some invalid arguments where I'm trying to call RemoveAll from my List<SelectListItem> object. I simply just need to remove a few items from a dropdown list based upon a simple condition.

public JsonResult GetExportTables(CaseListDynExport objCaseListDynExport)
{
    List<SelectListItem> lstExportTablesList = new List<SelectListItem>();
    try
    {
        CaseListDynExportBLL objCaseListDynExportBLL = new CaseListDynExportBLL();

        DataTable dtExportTables = objCaseListDynExportBLL.GetExportTables(objCaseListDynExport);

        lstExportTablesList = DropDownHelper.GetSelectListItem("TableName", "TableExportCode", null, dtExportTables);

        if (objCaseListDynExport.someCondition)
            lstExportTablesList.RemoveAll(lstExportTablesList.Where(l => l.Text.IndexOf("Audit") >= 0));
    }
    catch (Exception ex)
    {
        LogUtility.ErrorException(ex);
    }

    return Json(lstExportTablesList, JsonRequestBehavior.AllowGet);
}

I must be missing something really obvious, but I can't spot what I'm doing wrong.

I've looked at these posts:

But yea; can't spot what I'm doing incorrectly...

Upvotes: 0

Views: 76

Answers (1)

Julian
Julian

Reputation: 36710

It should be:

lstExportTablesList.RemoveAll(l => l.Text.IndexOf("Audit") >= 0);

So you pass a lambda method directly to the RemoveAll method for checking the condition.

A neater way, with the same functionality, would be:

lstExportTablesList.RemoveAll(l => l.Text.Contains("Audit"));

Upvotes: 5

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