Hi I am using Product Table. I choise Category DropDownList after page is postback and I choise checkbox and I choise another DropdownList after page is postback and I lost value Checkbox Checked. How can I do example.
As far as I know, when you choose another DropdownList and your page is postback, the contents of the GridView are re-created from the postback Viewstate data between page_init and page_load.
You can bind in this condition like the below, It will prevent rebinding to the GridView.
if (!Page.IsPostBack)
{
GridView1.DataSourceID = "Datasource";
GridView1.DataBind();
}
Best Regards,
Yohann Lu
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Gridview in checkbox after lost value
Nov 19, 2016 09:49 PM|Aliyilmaz|LINK
Hi I am using Product Table. I choise Category DropDownList after page is postback and I choise checkbox and I choise another DropdownList after page is postback and I lost value Checkbox Checked. How can I do example.
<asp:DropDownList ID="drpKategori" Style="width: 25%" CssClass="form-control" runat="server" OnSelectedIndexChanged="drpKategori_SelectedIndexChanged" AutoPostBack="true"></asp:DropDownList> </div> <div class="form-group"> <asp:Button ID="addRow" runat="server" Text="Yeni Satır" /> <asp:GridView ID="example" CssClass="table table-striped table-bordered table-hover" AutoGenerateColumns="false" runat="server" ClientIDMode="Static" OnPreRender="example_PreRender" OnRowEditing="example_RowEditing" OnRowCancelingEdit="example_RowCancelingEdit" OnRowDeleting="example_RowDeleting" OnRowDataBound="example_RowDataBound"> <Columns> <asp:TemplateField HeaderText="Ürün Seç" ItemStyle-Width="50"> <HeaderTemplate> <asp:CheckBox ID="chkAll" runat="server" onclick="checkAll(this);" /> </HeaderTemplate> <ItemTemplate> <asp:CheckBox ID="chcsec" CssClass="form-control" runat="server" onclick="Check_Click(this);" /> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Ürün Ad" ItemStyle-Width="100"> <ItemTemplate> <asp:Label ID="lblUrun" runat="server" Text='<%# Eval("UrunAd") %>'></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txturunad" runat="server" Text='<%# Eval("UrunAd") %>'></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Stok" ItemStyle-Width="50"> <ItemTemplate> <asp:Label ID="lblStok" Style="padding: 3px 5px;" runat="server" Text='<%# Eval("Stok") %>'></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txtstok" Style="padding: 3px 5px;" runat="server" Text='<%# Eval("Stok") %>'></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Fiyat" ItemStyle-Width="50"> <ItemTemplate> <asp:Label ID="txtfiyat" Style="padding: 3px 5px;" CssClass="form-control" runat="server"></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txtfiyat" Style="padding: 3px 5px;" runat="server" CssClass="form-control"></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Adet" ItemStyle-Width="50"> <ItemTemplate> <asp:Label ID="txtAdet" Style="padding: 3px 5px;" CssClass="form-control" runat="server"></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txtAdet" runat="server" Style="padding: 3px 5px;" CssClass="form-control"></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Eleman Seç" ItemStyle-Width="100"> <ItemTemplate> <asp:DropDownList ID="drpEleman" CssClass="form-control" runat="server"></asp:DropDownList> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Eleman Adet" ItemStyle-Width="50"> <ItemTemplate> <asp:Label ID="txtElemanAdet" Style="padding: 3px 5px;" CssClass="form-control" runat="server"></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txtElemanAdet" runat="server" Style="padding: 3px 5px;" CssClass="form-control"></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Eleman Fiyat" ItemStyle-Width="50"> <ItemTemplate> <asp:Label ID="txtElemanFiyat" Style="padding: 3px 5px;" CssClass="form-control" runat="server"></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="txtElemanFiyat" runat="server" Style="padding: 3px 5px;" CssClass="form-control"></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:CommandField ButtonType="Link" ShowEditButton="true" ShowDeleteButton="true" ItemStyle-Width="150" /> </Columns> </asp:GridView>https://www.portakalahsap.com
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Re: Gridview in checkbox after lost value
Nov 20, 2016 09:47 AM|Aliyilmaz|LINK
Can anyone help me ?
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Re: Gridview in checkbox after lost value
Nov 21, 2016 01:14 PM|vinz|LINK
Well looks like your issue was already addressed here: http://www.codeproject.com/Answers/1156926/Gridview-in-checkbox-after-lost-value#answer2
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Re: Gridview in checkbox after lost value
Nov 22, 2016 02:53 AM|Yohann Lu|LINK
Hi Aliyilmaz,
As far as I know, when you choose another DropdownList and your page is postback, the contents of the GridView are re-created from the postback Viewstate data between page_init and page_load.
You can bind in this condition like the below, It will prevent rebinding to the GridView.
if (!Page.IsPostBack) { GridView1.DataSourceID = "Datasource"; GridView1.DataBind(); }Best Regards,
Yohann Lu