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What Pete has said the issue is an ASP.NET issue rather than a C# issue, even though you are coding using C#
The C# forum covers a multitude of sins that are not related to ASP.NET in particular.
you will more than likely get an answer quicker using the ASP.NET forum
Every day, thousands of innocent plants are killed by vegetarians.
Help end the violence EAT BACON
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for (int i = 0; i < t.Rows.Count; i++)
{
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[0]["Address"].ToString();
}
error occur :
index was out of range,must be non-negative and less than the
size of the collection. parameter name:index
how i solve this prob,
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Kawshik_itbd wrote: for (int i = 0; i < t.Rows.Count; i++)
{
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[0]["Address"].ToString();
}
Change to
for (int i = 0; i<t.Rows.Count-1;i++)
{
...
}
This should do it..
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if i do
for (int i = 0; i <= <pre lang="xml">t.Rows.Count-1; i++)
{
dataGridView1.Rows.Add();
dataGridView1.Rows[i].Cells["Column1"].Value ="roy";
}</pre>
my prob is solve but i don;t add dataGridView1.Rows.Add() prog can not be execute through a exception like Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index whatever i do either t.Rows.Count-1 or t.Rows.Count
plz help what can i do
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Change
...
dataGridView1.Rows[i].Cells[...
...
to
...
dataGridView1.Rows[dataGridView1.Rows.Count-1].Cells[...
...
Your counter is based on t, which is not equal to the dataGridView.
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two row in my data table it shows only last row
String sql = "select Name,Gender,Course1,Course2 from Info ";
DataTable t = DataAccess.GetDataTable(sql);
for (int i = 0; i <t.Rows.Count; i++)
{
dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["Column1"].Value =t.Rows[i]["Name"] ;
dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["Column2"].Value =t.Rows[i]["Gender"] ;
dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["Column3"].Value =t.Rows[i]["Course1"] ;
dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["Column4"].Value = t.Rows[i]["Course2"];
}
how i show all the row in gridview plz solve this prob 
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This way you end up just filling the same row over and over, also it fails if there is no row in the DataGridView.
I would do it that way instead:
if (dataGridView1.Rows.Count <= i)
dataGridView1.Rows.Add();
dataGridView1.Rows[i].Cells[...
The good thing about pessimism is, that you are always either right or pleasently surprised.
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thank you Freak30 that means always add dataGridView1.Rows.Add()
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you can also write like this..
//this line write before for loop
//with this line grid(dataGridView1) create line as per dataTable(t)
dataGridView1.RowCount=t.Rows.Count
for (int i = 0; i < t.Rows.Count; i++)
{
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[0]["Address"].ToString();
}
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it does not show the multiple it shows only first row ,if i did like
for (int i = 0; i <t.Rows.Count; i++)
{
dataGridView1.Rows.Add();
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[i]["Name"];
dataGridView1.Rows[i].Cells["Column2"].Value = t.Rows[i]["Gender"];
dataGridView1.Rows[i].Cells["Column3"].Value = t.Rows[i]["Course1"];
dataGridView1.Rows[i].Cells["Column4"].Value = t.Rows[i]["Course2"];
}
no prob occur.
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You are using the list t as the source of your index count, rather than dataGridView1, it should be:
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[0]["Address"].ToString();
}
(or similar).
Veni, vidi, abiit domum
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is this right ?
String sql = "select Name,Gender,Course1,Course2 from Info ";
DataTable t = DataAccess.GetDataTable(sql);
MessageBox.Show(Convert.ToString(dataGridView1.Rows.Count));
for (int i = 0; i <t.Rows.Count; i++)
{
dataGridView1.Rows.Add();
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[i]["Name"];
dataGridView1.Rows[i].Cells["Column2"].Value = t.Rows[i]["Gender"];
dataGridView1.Rows[i].Cells["Column3"].Value = t.Rows[i]["Course1"];
dataGridView1.Rows[i].Cells["Column4"].Value = t.Rows[i]["Course2"];
}
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Kawshik_itbd wrote: is this right ?
It looks like it probably is; what happens when you try it? I would also ask why you are not using databinding to build your view automatically.
Veni, vidi, abiit domum
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it works .how i use databinding? can you gives some example of code ??
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There are lots of samples and articles around that explain databinding and how it can speed up your applications.
Veni, vidi, abiit domum
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the way that i follow is n;t correct or not ??
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Yes, it's correct, in the sense that it does what you need, but databinding is much more powerful and you can do it with a single line of code.
Veni, vidi, abiit domum
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thnaks for advice 
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Should be ok, provided you want to append every time you call this function. Else you will probably have to clear the GridControl first.
The good thing about pessimism is, that you are always either right or pleasently surprised.
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can you gives some basics about GridControl?
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you can also write like this..
//this line write before for loop
//with this line grid(dataGridView1) create line as per dataTable(t)
dataGridView1.RowCount=t.Rows.Count
for (int i = 0; i < t.Rows.Count; i++)
{
dataGridView1.Rows[i].Cells["Column1"].Value = t.Rows[0]["Address"].ToString();
}
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using Project1;
namespace Server
{
public partial class Form1 : Form
{
private TcpChannel tcpchannel = null;
private int port = 8998;
private Type type;
private WellKnownObjectMode wellknownobj;
private string objURL;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void btnKhoi_Click(object sender, EventArgs e)
{
try {
btnTat.PerformClick();
port = Int32.Parse(txtPort.Text);
tcpchannel = new TcpChannel(port);
ChannelServices.RegisterChannel(tcpchannel,false);
type = typeof(Proxy);
objURL ="Prime_URL";
if(rdb_sTon.Checked==true)
wellknownobj = WellKnownObjectMode.Singleton;
else
wellknownobj = WellKnownObjectMode.SingleCall;
RemotingConfiguration.GetRegisteredActivatedServiceTypes(type,objURL,wellknownobj);//Error this line
txtTrThai.Text="Khoi dong server tai Port"+port.ToString()+"luc"+ DateTime.Now.ToString();
}catch(Exception ex){
MessageBox.Show("Loi", ex.Message);
}
}
private void btnTat_Click(object sender, EventArgs e)
{
if (ChannelServices.GetChannel("tcp") != null) {
ChannelServices.UnregisterChannel(tcpchannel);
txtTrThai.Text = "tat server tai port" + port.ToString() + "luc" + DateTime.Now.ToString();
}
}
}
}
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It's telling you that the method doesn't take three parameters. In fact, it doesn't take any parameters - you can find this out by looking up the definition[^] on MSDN. Also, your call here is completely useless because you don't assign it back to anything.
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I am doing a project in which i am trying to read the data that is being sent from my microcontroller to the PC through serial port.
I am ok with the serial part (i guess)...
I was thinking of making it like, first when i run the program a gui would pop up asking user to select the COM port and other details like handshake, parity, baud rate, etc.
And after setting all that when the user presses the START button the current form should close and another form should pop up showing the data being read from the port continously.
Is that possible to create multiple forms ????
If possible please help me in doing so....
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alfie.max15 wrote: Is that possible to create multiple forms
Yes of course it is possible, use winforms or WPF for the UI.
Help you - Ok!
Do some research and decide on a platform, then get a book on that platform, read the book and do the examples.
When you have completed that start your application, when you run across a specific problem come back and we may be able to help you.
Never underestimate the power of human stupidity
RAH
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