Get value of ID Column in dataGridView ForEach?

Posted on 2008-06-25
Last Modified: 2013-12-16
I have some code that I would like to execute for each row in a dataGridView that I am populating from a database.  Does anyone know how I can get the value of the ID Column for each row for this foreach?  Any help is greatly appreciated.

Here is my code if you need it:

(You may notice that the Select Statement and columns in the dataGridView don't add up...  I accidentally deleted part of the Select Statement, so I'll be fixing that today...  In the meantime what is there is correct...

Thanks Again,


//Populate the Collection DataGridView

string conString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Environment.CurrentDirectory + @"\DB.accdb;Jet OLEDB:Database Password=xxxx;";

// create an open the connection

OleDbConnection conn = new OleDbConnection(conString);

OleDbCommand command = new OleDbCommand();

command = conn.CreateCommand();

// create the DataSet

DataSet ds = new DataSet();

// run the query

command.CommandText = "SELECT ID AS [#], CTitle AS [Title], CType AS [Type], CValue AS [Value] FROM Table1 WHERE Tab = 'Tab1';";

OleDbDataAdapter adapter = new OleDbDataAdapter();

adapter = new OleDbDataAdapter(command);


// close the connection


bindingSource.DataSource = ds.Tables[0];

dataGridView1.DataSource = bindingSource;

//Set Value Column Format to Currency

dataGridView1.Columns["Value"].DefaultCellStyle.Format = "c";

//Count the number of rows



int CountString;

CountString = bindingSource.Count;

Label1.Text = CountString + "";





//Total the value of results



String valueString = ds.Tables[0].Compute("Sum(Value)", String.Empty).ToString();

decimal valueString2 = Convert.ToDecimal(valueString);

String valueString3 = String.Format("{0:C}", valueString2);

if (valueString != "")


Label2.Text = valueString3;






// set the size of the dataGridView Columns

this.dataGridView1.Columns[0].Width = 50;

this.dataGridView1.Columns[1].Visible = false;

this.dataGridView1.Columns[2].Width = 311;

this.dataGridView1.Columns[3].Width = 50;

this.dataGridView1.Columns[4].Width = 50;

this.dataGridView1.Columns[5].Width = 100;

this.dataGridView1.Columns[6].Width = 100;

this.dataGridView1.Columns[7].Width = 100;

this.dataGridView1.Columns[8].Width = 100;

this.dataGridView1.Columns[9].Width = 100;

//Sort on the Title Column

DataGridViewColumn sortColumn = dataGridView1.Columns[2];

ListSortDirection direction;

direction = ListSortDirection.Ascending;

dataGridView1.Sort(sortColumn, direction);

//Set the Selected Property of the First Row to False

dataGridView1.Rows[0].Selected = false;

//Clear selection in dataGridView


dataGridView1.CurrentCell = null;





Open in new window

Question by:M_Lyons
LVL 29

Accepted Solution

anarki_jimbel earned 500 total points
ID: 21871008
Not 100% sure what do you need. Do you need to get a value for row's column if column name, say, is "ID"? Or, in other words, you have a row, and want to get "ID" value from it but does not know what's the column number? Do I understand properly?

If yes, you probably need two nested loops. I have written some sample code, but it's in VB, hope you can understand (it's very straightforward. In button_Click1 we iterate through rows, and through cells in each row, and if cell's owning column is "ID" - we print content.

In Form_Load I just populate the grid.

If you can'r read vb6 code let me know.
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        For Each r As DataGridViewRow In Me.dgv.Rows

            For i As Integer = 0 To r.Cells.Count - 1

                If r.Cells.Item(i).OwningColumn.Name = "ID" Then

                    Debug.WriteLine("ID = " & r.Cells.Item(i).Value)

                End If



    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        ' create datatable

        Dim dt As New DataTable

        ' create 3 datacolumns

        Dim dc0 As New DataColumn("ID")

        Dim dc1 As New DataColumn("Name")

        Dim dc2 As New DataColumn("Rank")

        ' add columns to datatable




        ' create, fill datarows and add them to table

        Dim dr0 As DataRow = dt.NewRow

        dr0.Item(0) = "22"

        dr0.Item(1) = "Bob"

        dr0.Item(2) = "H"

        Dim dr1 As DataRow = dt.NewRow

        dr1.Item(0) = "44"

        dr1.Item(1) = "Rod"

        dr1.Item(2) = "L"

        Dim dr2 As DataRow = dt.NewRow

        dr2.Item(0) = "66"

        dr2.Item(1) = "Ken"

        dr2.Item(2) = "M"




        ' set table as datasourse for datagridview

        Me.dgv.DataSource = dt

    End Sub

Open in new window


Author Closing Comment

ID: 31470509
Thank you very much, that did work well.  I used a VB to C# converter online.  I love those things...  lol  Thanks Again.

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this? (CODE) In .NET 3.5, this is possible…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Delivering innovative fully-managed cloud services for mission-critical applications requires expertise in multiple areas plus vision and commitment. Meet a few of the people behind the quality services of Concerto.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

919 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

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now