[naveed_786]

Dear All,

1. Can anybody tell me how can i disable a cell of datagrid in vb.net
2. How can i show current date in datagrid cell

i have used this peace of code on form load event

DataGridView1.CurrentRow.Cells(7).Value = Now
DataGridView1.CurrentRow.Cells(0).ReadOnly = True

but it give me message object reference is not set to an instance of object what should i do to resolve these two issues.

[modi123_1]

Would your grid even have rows it in at that point? I mean if there is no "current row" that would be a problem.

This is easily determined by putting a break point on that first line and checking to see if 'current row' exists or not.

[naveed_786]

Yes it has current row

[modi123_1]

Okay then you attempting to access cells/columns before they are set.

Either you have no rows or cells.

[naveed_786]

I didn't understand please any body can help me.

[Eloryan]

Hi naveed_786.
i would like to know the result message that will return the following code

MsgBox(DataGridView1.CurrentRow.Cells(7).ToString)

cause as modi123_1 said this error occurs if there is no Currentrow.

[naveed_786]

I got this message

Datagridview textboxcell{Columnindex = 7, Rowindex = 0}

[naveed_786]

Okay let me play my self

[naveed_786]

Okay when i write this code on click event of a buton

DataGridView1.CurrentRow.Cells(7).Value = Now

DataGridView1.CurrentRow.Cells("PR_NO").ReadOnly = True

It works fine but i want to write this code on form load event here it gives me error how to resolve it error is

"bject reference is not set to an instance of object"

[naveed_786]

Here is the solution i have done it

    Private Sub dataGridView1_CellClick(ByVal sender As Object, _
    ByVal e As DataGridViewCellEventArgs) _
    Handles DataGridView1.CellClick

        DataGridView1.CurrentRow.Cells(0).ReadOnly = True
        DataGridView1.CurrentRow.Cells(7).Value = Now
    End Sub