Data Controls :: Show Hide CommandButton Based On Condition In GridView

I am adding two button in gridview here I populate gridview on page load this work fine problem is that  when my status value are  check  or peending then my two button are show.

But I want when my status value are check then check  button  should be hide

And view button show in which row where staus value  are check But when my status value are peending here show check button and view button should be hide. I want follwing type .

Gridview Like that on page load

id name class status

1 imran 5 check

Hide Check button
View Button Show

2 ali 8 pending

Check  Button Show
View Button Hide

3 farooq 7 check

Hide Check button
View Button Show

How to do it following my code.

Default.Aspx.cs
protected void Button1_Click(object sender, EventArgs e)
{
populategridview();
}
public void populategridview()
{
string strConnString = "Data Source=.SQLEXPRESS;Integrated Security=SSPI;

[Code] .....