Use below code.
HTML
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridAdd" runat="server" AutoGenerateColumns="false" ShowHeader="false" ShowFooter="true">
<Columns>
<asp:BoundField DataField="ITEMID" HtmlEncode="false" ShowHeader="false" ItemStyle-Width="120px" />
<asp:BoundField DataField="INVENTCOLORID" HtmlEncode="false" ShowHeader="false" ItemStyle-Width="60px" />
<asp:BoundField DataField="INVENTSIZEID" HtmlEncode="false" ShowHeader="false" ItemStyle-Width="60px" />
<asp:BoundField DataField="TW_QTY" HtmlEncode="false" ShowHeader="false" ItemStyle-Width="60px" />
<asp:TemplateField ItemStyle-Width="60px">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Width="100%" Text='<%# Eval("total_df") %>' CssClass="har"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ItemStyle-Width="60px">
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Width="100%" Text='<%# Eval("total_df_ny_fixed") %>' CssClass="har"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ItemStyle-Width="60px">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Width="100%" Text='<%# Eval("DF_fixed") %>' CssClass="har"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ItemStyle-Width="60px">
<ItemTemplate>
<asp:TextBox ID="TextBox4" runat="server" Width="100%" Text='<%# Eval("DF_ny_fixed") %>' CssClass="har"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
$("[id*=TextBox1]").val("0");
});
$(document).on("change keyup", "[id*=TextBox1]", function () {
var quantity = parseFloat($.trim($(this).val()));
if (isNaN(quantity)) {
quantity = 0;
}
$(this).val(quantity);
var row = $(this).closest("tr");
$("[id*=TextBox4]", row).val(parseFloat($("[id*=TextBox3]", row).val()) + parseFloat($("[id*=TextBox2]", row).val()) + parseFloat($(this).val()));
});
</script>
</body>
Code
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[]
{
new DataColumn("ITEMID"),
new DataColumn("INVENTCOLORID"),
new DataColumn("INVENTSIZEID"),
new DataColumn("TW_QTY"),
new DataColumn("total_df"),
new DataColumn("total_df_ny_fixed"),
new DataColumn("DF_fixed"),
new DataColumn("DF_ny_fixed")
});
dt.Rows.Add(1, 1, 2, 10, 20, 10, 10, 10);
dt.Rows.Add(2, 1, 2, 10, 20, 10, 10, 10);
GridAdd.DataSource = dt;
GridAdd.DataBind();
}
}
