I assign a column programmatically to a DataTable like this: myDataTable.Column开发者_开发知识库s.Add(myDataColumn);
I\'ve written some code to test equality between column values in DataTables when the column type isn\'t known.
I have a datagridview on a form with multiple columns. Three of the columns are expression columns. One column is subtracted from the second and the result is displayed in the third. Everything works开
There are three column in the datatable A,B and C. Now each column is type of decimal. Now I am doing like dt.Columns[\"A\"].Expression=\"B+C\"; to make addition of Column B\'s record and column C\'s
I have a DataTable with a DateTime column, \"DateCol\", that can be DBNull.The DataTable has one row in it with a NULL value in this column.
If I have a strongly typed data table with a column for values of type Int32, and 开发者_开发问答this column allows nulls, then I\'ll get an exception if I do this for a row where the value is null:
I\'ve cobbled together a C# program that takes a .csv file and writes it to a DataTable.Using this program, I can loop through each row of the DataTable and print out the information contained in the
How do you convert a DataColumn of GUIDs开发者_StackOverflow set as type string to a DataColumn of GUIDs where the type is Guid? A column in the source data has the wrong type and I cannot change it t
When I\'m debugging a datatable, say in th开发者_如何学运维e watch window, I\'ll often choose the Rows property, and then a particular index-- 0 or 1, often times.
I\'m playing around wi开发者_运维技巧th the DataGridView control offered by .NET. Upon till now I seem to be unable to bind an (I)List to a DataColumn.
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