![20100121_154215.jpg](https://test.c-sharpcorner.com/Forums/UploadFile/diya0076/01212010045836AM/20100121_154215.jpg)
n when i click on show button:
code for dat is :
string con = "Server=.\\SQLEXPRESS;Database=db1.mdf;Trusted_Connection=True;";
SqlDataAdapter da = new SqlDataAdapter();
private void btnshow_Click(object sender, EventArgs e)
{
string q = "select * from items where cname= " + "'" +comboBox1.SelectedValue.ToString() + "'";
textBox1.Text = comboBox1.SelectedValue.ToString();
da = new SqlDataAdapter(q, con);
DataSet ds = new DataSet();
da.Fill(ds);
dataGrid1.DataSource = ds;
}
bt i get error at runtime on the statement
da.Fill(ds);
Error:Error
Unable to copy file "D:\WindowsApplication2\WindowsApplication2\db1_log.ldf"
to "bin\Debug\db1_log.ldf".
The process cannot access the file 'D:\WindowsApplication2\WindowsApplication2\db1_log.ldf'
because it is being used by another process. WindowsApplication2
N when i stop the program this error continue to occur while building..
but when i restart my computer this error gone..
whts the reason??