I am doing an foreach on all columns on my DataTables row. I want to get data from a specific column but cant figure out how to do it. See code. DataTable dt = mHandler.GetRegistrtationProgress(cu...

2014年6月22日 · public DataColumn Add(string columnName, Type type) { DataColumn column = new DataColumn(columnName, type); this.Add(column); return column; } As you can see, internally it creates new instance of DataColumn and adds it to itself. NOTE: You can use DataColumn constructor which accepts column data type as second parameter. Thus your second ...

2009年11月12日 · Is there a better way than this to check if a DataColumn in a DataTable is numeric (coming from a SQL Server database)? Database db = DatabaseFactory.CreateDatabase(); DbCommand cmd = db.

2018年9月14日 · The / character in date/time format strings stands for "whatever the date separator of the format provider is".

2015年2月8日 · However I have a column that will have a flag which is an image. I had already imported the two flags(.png images) into the projects resources. However I cant set the DataType for the column as System.Type.Bitmap as DataColumn doesnt support that as can be seen here HERE . I had seen a solution that said I set DataType as below

var x = from DataColumn c in myDataTable.Columns select c.ColumnName It will effectively do the same as Dave's code: "in a query expression, an explicitly typed iteration variable translates to an invocation of Cast(IEnumerable)", according to …

2013年9月21日 · I declared a new dataset. Then added a datatable to it using the following command DataTable newtable = ds.Tables.Add("returnresult"); now am trying to include two columns in this datatable with

2013年10月11日 · I have a table with 1 column: 'Status' I want to add in another column named 'Action', its value will be as follow: if Status = 'Yes' Then Action = 'Go', otherwise, Action = 'Stop'. I used this

2015年1月14日 · You cannot remove items from a collection while enumerating it with the foreach loop. Make a copy of the collection using Collection.ToArray() and run you foreach on the copy and remove your item from the actual collection.

2012年7月19日 · I want to move the data from a dataColumn to a specific column in my dataTable. I am not sure how to specify what column within my Datatable I want to add the datacolumn. foreach (DataColumn col in dt.Columns) { dt1.Columns.Add(col); } I receive an exception Column 'X' already belongs to another DataTable.