how to solve Index was out of range??

i am a newbiest to c#web service

i have a web service provided by web site A, then web site B consume it

I am able to bind the data into the grid view, however, i am not able to update and i try and result in error...the error is

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

please help me see what wrong with my code

thanks in advance

this is my code

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

            BindNominal();
        }


    }
 

    protected void BindRoll()
    {
   

        WSRoll.WSUpdateRoll roll = new WSRoll.WSUpdateRoll();
        GVRoll.DataSource = roll.getRoll();
        GVRoll.DataBind();
    }
    protected void GVRoll_RowEditing1(object sender, GridViewEditEventArgs e)
    {
        GVRoll.EditIndex = e.NewEditIndex;
        BindRoll();
    }
    
    protected void GVRoll_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GVRoll.EditIndex = -1;
        BindRoll();

    }

    protected void GVRoll_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        GridViewRow row = (GridViewRow)GVRoll.Rows[e.RowIndex];

        int Roll_ID = Int32.Parse(GVRoll.DataKeys[e.RowIndex].Values.ToString());
        TextBox TextBox1 = (TextBox)row.FindControl("TextBox1");
       int status = Convert.ToInt32(GVRoll.DataKeys[e.RowIndex].Values[2);

         WSRoll.WSUpdateRoll rollup = new WSRoll.WSUpdateRoll();
         GVRoll.DataSource = rollup.updateRoll(Roll_ID, TextBox1.Text,status);
    }
}

Hi,

It looks as though at the time your are trying to retrieve the data, your GridView has no Rows or Cells. Check the Rows.Count and Rows(0).Cells.Count properties to check which one is failing.

Please make sure before this:

int status = Convert.ToInt32(GVRoll.DataKeys[e.RowIndex].Values[2);

If (e.Row.RowType = DataControlRowType.DataRow) Then {some logic}

i am able to retrieve data , NOT able to update in the GRIDVIEW

user361145 said:

i am able to retrieve data , NOT able to update in the GRIDVIEW

Hello there...

I'm suspecting on few reasons why you get this, before having more concrete answer, can you please elaborate more on the following two questions:

1. In which line the code breaks?
2. Can we see where and how you bind the gridview with data?
3. Can you show us the code in the updateRoll method or at least how does it works?

Thanks,
Hajan

Hi again,