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c#winformsreporting-servicesrdlclocalreport

Best way in Converting DataGrid View to DataSet/DataTable


DataSet, DataTable and linq expression are common DataSource values of a DataGridView.

Now in reverse, is it possible to pass/bind a DataGridView record to DataSet or DataTable?

Thanks


Solution

  • Got this Best Answer from Csharp Corner:

    public DataTable LINQToDataTable<T>(IEnumerable<T> varlist)
    {
        DataTable dtReturn = new DataTable();
    
        // column names 
        PropertyInfo[] oProps = null;
    
        if (varlist == null) 
            return dtReturn;
    
        foreach (T rec in varlist)
        {
            // Use reflection to get property names, to create table, Only first 
            // time, others will follow 
            if (oProps == null)
            {
                oProps = ((Type)rec.GetType()).GetProperties();
                foreach (PropertyInfo pi in oProps)
                {
                    Type colType = pi.PropertyType;
    
                    if ((colType.IsGenericType) && 
                        (colType.GetGenericTypeDefinition() == typeof(Nullable<>)))
                    {
                        colType = colType.GetGenericArguments()[0];
                    }
                    dtReturn.Columns.Add(new DataColumn(pi.Name, colType));
                }
            }
            DataRow dr = dtReturn.NewRow();
    
            foreach (PropertyInfo pi in oProps)
            {
                dr[pi.Name] = pi.GetValue(rec, null)==null ? DBNull.Value 
                                                           : pi.GetValue(rec,null);
            }
    
            dtReturn.Rows.Add(dr);
        }
        return dtReturn;
    }
    

    Example: To use this method, just use the following code sample:

    var vrCountry = from country in objEmpDataContext.CountryMaster
                    select new {country.CountryID,country.CountryName};
    
    DataTable dt = LINQToDataTable(vrCountry);
    

    Thanks