Assignment Problem

[C# Programming]

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