Hello. I have a datagrid with one row. I have a button that adds a new row.
I am trying to implement that when the user selects one product it must
change the price on the quantity column. Anyway when the user selects the
first dropdownlist the dropdownselecte d_indexchanged is firring but when the
user chagnes the second dropdownlist its not firing.
aahh! if the user selects any of both dropdownlist the datagrid stays with
only one row?
Whjy??
<asp:datagrid id="dgpedidos" runat="server" Width="100%"
AutoGenerateCol umns="False">
<ItemStyle CssClass="regis tros"></ItemStyle>
<HeaderStyle CssClass="titul ostablas"></HeaderStyle>
<Columns>
<asp:TemplateCo lumn>
<ItemTemplate >
<asp:LinkButt on runat="server" Text="Eliminar"
CommandName="De lete" CausesValidatio n="false"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateCol umn>
<asp:TemplateCo lumn HeaderText="Pro ducto">
<ItemTemplate >
<asp:DropDownLi st id="ddlproducto s" runat="server"
AutoPostBack="T rue"
OnSelectedIndex Changed="DropDo wn_SelectedInde xChanged"></asp:DropDownLis t>
</ItemTemplate>
<FooterTemplate >
<asp:LinkButt on id="LinkButton1 " runat="server"
CommandName="ag regarproducto"> Agregar Producto</asp:LinkButton>
</FooterTemplate>
</asp:TemplateCol umn>
<asp:TemplateCo lumn HeaderText="Can tidad">
<ItemTemplate >
<asp:TextBox id="txtcantidad " runat="server" Width="44px"
CssClass="texto s" AutoPostBack="T rue"
OnTextChanged=" calcularsubtota l"></asp:TextBox>
</ItemTemplate>
</asp:TemplateCol umn>
<asp:TemplateCo lumn HeaderText="Pre cio">
<ItemTemplate >
<asp:TextBox id=txtprecio runat="server" Width="60px"
CssClass="texto s" Text='<%# DataBinder.Eval (Container,
"DataItem.preci oespecifico") %>'>
</asp:TextBox>
</ItemTemplate>
</asp:TemplateCol umn>
<asp:TemplateCo lumn HeaderText="Iva ">
<ItemTemplate >
<asp:TextBox id=txtivaporpro ducto runat="server" Width="36px"
CssClass="texto s" Text='<%# DataBinder.Eval (Container, "DataItem.i va") %>'>
</asp:TextBox><FO NT size="2">%</FONT>
</ItemTemplate>
</asp:TemplateCol umn>
<asp:TemplateCo lumn HeaderText="Sub total">
<ItemTemplate >
<asp:TextBox id="txtsubtotal porproducto" runat="server"
Width="68px" CssClass="texto s"></asp:TextBox>
</ItemTemplate>
</asp:TemplateCol umn>
</Columns>
</asp:datagrid>
the function that adds a new row is this.
Private Sub LinkButton2_Cli ck(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles LinkButton2.Cli ck
Dim tcells As TableCellCollec tion
'tcells = e.Item.Cells
Dim lnkeliminarcel As New TableCell
Dim productcell As New TableCell
Dim cantidadcell As New TableCell
Dim preciocell As New TableCell
Dim taxescell As New TableCell
Dim subtotalcell As New TableCell
Dim ddlproductos As New DropDownList
ddlproductos.Au toPostBack = True
'ddlproductos = e.Item.Cells(1) .FindControl("d dlproductos")
ddlproductos.At tributes.Add("O nSelectedIndexC hanged",
"DropDown_Selec tedIndexChanged ")
ddlproductos.Da taSource = CType(Session(" productos"), DataSet)
ddlproductos.Da taTextField = "descripcio n"
ddlproductos.Da taValueField = "idproducto "
ddlproductos.Da taBind()
productcell.Con trols.Add(ddlpr oductos)
Dim lnkbutton As New LinkButton
lnkbutton.Text = "Eliminar"
lnkbutton.Comma ndName = "Delete"
lnkeliminarcel. Controls.Add(ln kbutton)
Dim txtcantidad As New TextBox
txtcantidad.Tex t = 1
txtcantidad.Css Class = "textos"
txtcantidad.Wid th = Unit.Pixel(44)
cantidadcell.Co ntrols.Add(txtc antidad)
Dim txtprecio As New TextBox
txtprecio.CssCl ass = "textos"
txtprecio.Width = Unit.Pixel(60)
txtprecio.Text =
objconsultas.pr ecioxproducto(d dlproductos.Sel ectedValue)
preciocell.Cont rols.Add(txtpre cio)
Dim txtivaporproduc to As New TextBox
txtivaporproduc to.CssClass = "textos"
txtivaporproduc to.Width = Unit.Pixel(36)
txtivaporproduc to.Text =
objconsultas.iv aporproducto(dd lproductos.Sele ctedValue)
taxescell.Contr ols.Add(txtivap orproducto)
Dim cantidad As Int32 = Convert.ToInt32 (txtcantidad.Te xt)
Dim price As Int32 = Convert.ToInt32 (txtprecio.Text )
Dim subtotal As Decimal = cantidad * price - ((cantidad * price) *
(txtivaporprodu cto.Text / 100))
Dim txtsubtotalporp roducto As New TextBox
txtsubtotalporp roducto.CssClas s = "textos"
txtsubtotalporp roducto.Width = Unit.Pixel(68)
txtsubtotalporp roducto.Text = subtotal.ToStri ng
subtotalcell.Co ntrols.Add(txts ubtotalporprodu cto)
Dim di As New DataGridItem(0, 0, ListItemType.It em)
di.Cells.Add(ln keliminarcel)
di.Cells.Add(pr oductcell)
di.Cells.Add(ca ntidadcell)
di.Cells.Add(pr eciocell)
di.Cells.Add(ta xescell)
di.Cells.Add(su btotalcell)
dgpedidos.Contr ols(0).Controls .Add(di)
End Sub
I also put something on the itemdatabound ç
Private Sub dgpedidos_ItemD ataBound(ByVal sender As Object, ByVal e As
System.Web.UI.W ebControls.Data GridItemEventAr gs) Handles
dgpedidos.ItemD ataBound
If e.Item.ItemType = ListItemType.It em Or e.Item.ItemType =
ListItemType.Al ternatingItem Then
Dim ddlproductos As New DropDownList
ddlproductos.Au toPostBack = True
ddlproductos = e.Item.Cells(1) .FindControl("d dlproductos")
ddlproductos.At tributes.Add("O nSelectedIndexC hanged",
"DropDown_Selec tedIndexChanged ")
ddlproductos.Da taSource = CType(Session(" productos"), DataSet)
ddlproductos.Da taTextField = "descripcio n"
ddlproductos.Da taValueField = "idproducto "
ddlproductos.Da taBind()
Dim txtquantity As TextBox
txtquantity = e.Item.Cells(2) .Controls(1)
txtquantity.Tex t = 1
Dim txtprice As TextBox
txtprice = e.Item.Cells(3) .Controls(1)
Dim txtsubtotal As TextBox
Dim txtiva As TextBox
txtiva = e.Item.Cells(4) .Controls(1)
txtsubtotal = e.Item.Cells(5) .Controls(1)
txtsubtotal.Tex t = (Convert.ToInt3 2(txtquantity.T ext) *
Convert.ToInt32 (txtprice.Text) ) - (Convert.ToInt3 2(txtquantity.T ext) *
Convert.ToInt32 (txtprice.Text) * (txtiva.Text / 100))
recorrerdatagri dycalcular()
End If
End Sub
