Question:
I have this simple code:
currentDataTable.Columns.Add("Active", Type.GetType("System.Boolean")); currentDataTable.Columns.Add("Symbol", Type.GetType("System.String")); currentDataTable.PrimaryKey = new DataColumn[] {currentDataTable.Columns[1]}; string FilterExpression = "Symbol = AAA"; DataRow[] existingRows = currentDataTable.Select(FilterExpression); When executing, I get this error: Cannot find column [AAA].
What am I doing wrong??
Solution:1
If you want "AAA" to be interpreted as a string, use:
string FilterExpression = "Symbol = 'AAA'"; From the DataColumn.Expression documentation:
When you create an expression for a filter, enclose strings with single quotation marks:
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