dataTable在运行时添加列

Question

Hello Every one I m stuck in one problem but I don't how to resolve it

I have dataTable InvoiceViewWithUserDataTable related to view : InvoiceWithUserView (database)

I want to add 2 columns in run time to datatable InvoiceViewWithUserDataTable

InvoiceViewWithUserDataTable .Columns.Add("IntegrationSuccessed", GetType(Integer))
 InvoiceViewWithUserDataTable .Columns.Add("ResponseGet", GetType(String))

InvoiceViewWithUserDataTable.FillMyData(startindex, lineNumber)

Foreach(var row  in InvoiceViewWithUserDataTable)
{
    row.ResponseGet (error)
    row.IntegrationSuccessed (error)

}

but the in results I can't get the value for this 2 column even if my stored pro return them

Answer 1

Try this---

InvoiceViewWithUserDataTable.Columns.Add("NewColumn", typeof(System.Int32));

foreach(DataRow row in InvoiceViewWithUserDataTable .Rows)
{
//need to set value to NewColumn column
row["NewColumn"] = 0; // or set it to some other value
}

Also, you are populating the data from the database then it clear the existing data or create a new data table object. First, get the data from the database then add a new column and after that insert values in these columns.
Also, refer the following link for run time column
Add new column and data to datatable that already contains data - c#