Asp.Net Save Process Problem

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ASP.NET

In Merchansdising Module there 90 or more than 100 row in Gridview loaded for Color and Size. When I save the process by clicking Save button then it not save and not show any message.
The code is here

for (int i = 0; i < SizeGrid.Rows.Count; i++)
    {
        string status;
        CheckBox chkslect = (CheckBox)SizeGrid.Rows[i].FindControl("chkselect");
        Label lblSizeDimn = (Label)SizeGrid.Rows[i].FindControl("lblSizeDimn");
                   Label lblplacement = (Label)SizeGrid.Rows[i].FindControl("lblplacement");
        string maincat = grdSizeSensitivity.Rows[i].Cells[1].Text;
        string size = SizeGrid.Rows[i].Cells[2].Text;
        DropDownList drpdimn = (DropDownList)SizeGrid.Rows[i].FindControl("drpsezesenmaincat");
        string itemname = SizeGrid.Rows[i].Cells[3].Text;
       
        TextBox txtprice = (TextBox)SizeGrid.Rows[i].FindControl("txtprice");
        inventory.Update_Size(int.Parse(drpStyleno.SelectedValue), maincat, size, drpdimn.SelectedItem.Text, itemname, lblplacement.Text.Trim(), txtprice.Text.Trim(), int.Parse(status), lblSizeDimn.Text);