Assignment Problem

Question

Hello all
my problem is that for some reason, a simple assignment isn't working.
the dataGridView is binded to DB and im trying to assign a value type string to a column of type string

 //the initialization of the DataGridView     
       bindingSourceSchema.DataSource = null;
            dgwSchema.Columns["colID"].DataPropertyName = "APP_ID";
            dgwSchema.Columns["colName"].DataPropertyName = "DESCRIPTION";
            dgwSchema.Columns["colTextbox"].DataPropertyName = "APP_ARGS";
            dgwSchema.Columns["colTextbox"].HeaderText = "Parameters";          
            dgwSchema.Columns["colLink"].DataPropertyName = "APP_PATH";
            dgwSchema.Columns["colLink"].HeaderText = "Path";

            DataGridViewLinkColumn colLink = (DataGridViewLinkColumn)dgwSchema.Columns["colLink"];
            colLink.UseColumnTextForLinkValue = true;
            colLink.Text = "Edit";
            bindingSourceSchema.DataSource = SchemaDB.GetGenericApps();
.
.
.

//the assignment
                if (openFileDialog.ShowDialog() == DialogResult.OK)
                {
                    dgwSchema.CurrentRow.Cells["colLink"].Value = openFileDialog.FileName;

                    // !! ?? dgwSchema.CurrentRow.Cells["colLink"].Value STAYS with parameter "Edit"
                }

Thanks
Eyal