DataGrid DataBindings Winforms

Question

DataGrid DataBindings Error

class Test1
{
   public DataTable table1 = new DataTable();
   public BindingSource sr = new BindingSource();
}

class Test2
{

    Test1 ta =new Test1();

    DataTable table1 = new DataTable();
    table1.Columns.Add("Dosage", typeof(int));
    table1.Columns.Add("Drug", typeof(string));
    table1.Columns.Add("Patient", typeof(string));
    table1.Columns.Add("Date", typeof(DateTime));

    table1.Rows.Add(25, "Indocin", "David", DateTime.Now);
    table1.Rows.Add(50, "Enebrel", "Sam", DateTime.Now);
    table1.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now);
    table1.Rows.Add(21, "Combivent", "Janet", DateTime.Now);
    table1.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now);

    ta.table1 = table1 ;

   datagridview dgv = new datagridview();
   dgv.AutoGenerateColumns = true ;
   dgv.DataBindings.Add("DataSource",ta,"table1");
}

the above code giving me "Cannot bind to the property or column table1 on the DataSource.Parameter name: dataMember." . What mistake i ma doing here ,i did not get it .Can any one help me ?

Answer 1

Alternatively, you could always create an object list and bind the list. Create a "Patient" class with the parameters you posted (Dosage, DrugName, PatientName, and Time). Then create objects and add them to a list and finally set the DGV datasource equal to that list. Here's some sample code that could help you:

DataGridView dgvPatient = new DataGridView();      //Create DGV
List<Patient> patientList = new List<Patient>();   //Create list
//Create and populate your object patient
Patient p1 = new Patient(###, "DrugName", "PatientName", DateTime);
patientList.Add(p1);                              //Add to list

dgvPatient.DataSource = typeof(Patient);
dgvPatient.DataSource = patientList;              //Assign to DGV

This is a different way to go about doing it but has worked pretty well for me in the past. Hope this helps

Answer 2

Use the DataSource property directly to bind your data source like

dgv.AutoGenerateColumns = false;
dgv.DataSource = ta.table1;

Well per your posted code the object data source you are passing is wrong, it has to be ta.table1 instead of just ta

   dgv.DataBindings.Clear();
   dgv.AutoGenerateColumns = false;
   dgv.DataBindings.Add("DataSource",ta.table1,"DataSource");

Also change the below line as

DataTable table1 = new DataTable("table1");

See MSDN documentation https://msdn.microsoft.com/en-us/library/b6y3aby2(v=vs.110).aspx#Examples for more information