How can I understand this expression in read range activity

[ppr (Peter Preuss)]

@user47

Please tell me what does it mean and how I can practice those expressions.

[HowTo] LINQ (VB.Net) Learning Catalogue

This topic references the different Learning HowTos related to LINQ. It will be updated on new published HowTos as well LINQ Learning: Topic LINK First Start with LINQ [HowTo] - First Start with LINQ (VB.Net) Exploring the LINQ universe [HowTo] - Exploring the LINQ Universe (VB.Net) Operator [HowTo] Overview Topic LINK Where [HowTo] LINQ - First Start # Where Operator Select work in progress Any [HowTo] LINQ – First Start # Any Operator All [HowTo] LINQ – First Start…

RawDt.Columns.Cast(Of System.Data.DataColumn)

We prepare the processing of the datacolumns for LINQ with the CAST operator/method

.Where(Function(s) Not ColumnNameDt.AsEnumerable.Any(Function(c) c(“Column Name”).ToString.Trim.Equals(s.ColumnName.ToString.Trim))).ToArray()

We do filter with the WHERE operator / method the datacolumns

The filter expression is about: check for the column “ColumnName” in the datatable: ColumnNameDT the values, if there is any value present as the currend looped ColumnName

The looped ColumnName are taken from the DataColumns which we do loop with the cast and from where we take the columnname with s.ColumnName