Solved

How to add Row to datagrid OnItemDataBoundEventHandler

Posted on 2004-09-21
7
233 Views
Last Modified: 2008-02-01
How do I add a row and then columns to a datagrid?  Let me know if you need more info.  Also, if you can show me how to NOT display the ID column, please do because I have to do a second access without the ID, which is slow.
Here is the existing code:

// access data with ID column
recordX = dbAccess.getDataTable(con, table, sql);
// add second access to data without ID column for binding
DataTable data = dbAccess.getDataTable(con, table, sqlSv);
dg.DataSource = data;
dg.DataBind();


protected void OnItemDataBoundEventHandler(Object sender, DataGridItemEventArgs e)
{
      ListItemType type = e.Item.ItemType;
      int priceSBT = 0;
      string svDate = "";

      if (type == ListItemType.Header ||
          type == ListItemType.Footer ||
          type == ListItemType.Separator) return;
          try
         {  
              DataRow dr = ((DataRowView)e.Item.DataItem).Row;
              int iCtr = e.Item.Controls.Count;
              int xCtr = 0;
              string table = Session["tablename"].ToString();
              xCtr = iCtr-1;
 
// for row (or y) - must take into account which page it is (dg.CurrentPageIndex) * no. of rows on page (15)
                int y = dg.Items.Count+(dg.CurrentPageIndex*15);
                        
// Add Subtotals on Date Change
                if (recordX.Rows[y]["Order Dt"].ToString() == svDate.ToString())
                {
                  string sContent = recordX.Rows[y]["Price"].ToString();
                  int iContent = Convert.ToInt32(sContent);
                  priceSBT += iContent;
                 }
                 else
                 {
     //**************** add row then add column with subtotal priceSBT HERE

                                       svDate = recordX.Rows[y]["Order Dt"].ToString();
                            }
                     }
 }
0
Comment
Question by:dcass
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
7 Comments
 
LVL 5

Expert Comment

by:tomasX2
ID: 12118307
What is it exactly that your trying to do?
0
 

Author Comment

by:dcass
ID: 12118903
Add a row with a column for the subtotal of several lines on a date break.
0
 
LVL 3

Accepted Solution

by:
w_shaila earned 500 total points
ID: 12119071
1) Caleculate subtotal with the columns in datatable by looping datatable rows
2) Create a Row and assign subtotal to this row
3) bind this datatable to dataGrid()

Regarding  ID column, you can add the colums what ever you want to the datagrid manually. But that ID column should be there in the datasource.you can manage with DataKeyField  without showing in grid as a clomn.

0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:dcass
ID: 12119091
Can you show me the code it would take to do these two things?
I am new and don't know how.
0
 

Author Comment

by:dcass
ID: 12119819
Unfortunately my boss expects this in the morning to show his boss -
Can anyone help me on this?
I've tried:

recordX = dbAccess.getDataTable(con, table, sql);
DataTable data = dbAccess.getDataTable(con, table, sqlSv);

string svDt = "";
string cssClass = "";
string tdclass = "";
foreach(DataRow row in data.Rows)
{
   string Price=row["Price"].ToString();
   string ordDt=row["Order Dt"].ToString();
    if(ordDt!=svDt)
    {
                svDt = ordDt;
                DataColumn col = new DataColumn();
      DataRow rowx;
      col.DataType = System.Type.GetType("System.String");
      col.ColumnName = "PriceSBT";
      data.Columns.Add(col);
      rowx = data.NewRow();
      rowx["PriceSBT"] = Price;
      data.Rows.Add(rowx);
      }
}

But I get an error:
Collection was modified; enumeration operation may not execute.

Any other way to do this?



                  dg.DataSource = data;
0
 

Author Comment

by:dcass
ID: 12120133
Never mind - I finally got it - sort of.
I gathered you can't add rows for subtotals because it adds them to the bottom of the table instead of where you need it - on the date breaks, so I added a column instead that I populated on date change.
If there is a way to add rows in the middle of a data table (other than rewrite the program and add it to the database table), please let me know.
Otherwise, please close and refund points.
0
 

Author Comment

by:dcass
ID: 12142832
I decided to give point for responding -
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes a simple method to resize a control at runtime.  It includes ready-to-use source code and a complete sample demonstration application.  We'll also talk about C# Extension Methods. Introduction In one of my applications…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question