Solved

Get value of ID Column in dataGridView ForEach?

Posted on 2008-06-25
2
11,973 Views
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,
try
{
//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);
adapter.Fill(ds);
 
// close the connection
conn.Close();
 
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
try
{
int CountString;
CountString = bindingSource.Count;
Label1.Text = CountString + "";
}
catch
{
}
 
//Total the value of results
try
{
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;
}
}
catch
{
}
 
// 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.ClearSelection();
dataGridView1.CurrentCell = null;
}
catch
{
}

Open in new window

0
Comment
Question by:M_Lyons
[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
2 Comments
 
LVL 30

Accepted Solution

by:
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
            Next
 
        Next
 
    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
        dt.Columns.Add(dc0)
        dt.Columns.Add(dc1)
        dt.Columns.Add(dc2)
        ' 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"
        dt.Rows.Add(dr0)
        dt.Rows.Add(dr1)
        dt.Rows.Add(dr2)
 
        ' set table as datasourse for datagridview
        Me.dgv.DataSource = dt
 
    End Sub

Open in new window

0
 

Author Closing Comment

by:M_Lyons
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.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

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 …
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…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

732 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