javascript checkbox删除提示

最新推荐文章于 2023-02-11 09:28:34 发布

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最新推荐文章于 2023-02-11 09:28:34 发布

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分类专栏： c#(asp.net) 文章标签： javascript delete server asp string function

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本文介绍了一个ASP.NET网页中实现删除确认功能的方法。通过JavaScript函数`DeleteAlert()`来检查表格中的复选框是否被选中，并在用户尝试删除记录之前显示警告提示。如果未选择任何记录，则会弹出提示信息。

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aspx:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
    <script language="javascript">
     function DeleteAlert()
        {
            var gvtable = document.getElementById('GridView1');
            var counter = 0;
            for (var i = 1; i < gvtable.rows.length; i++)
            {
                var cbx = gvtable.rows(i).cells(0).children(0);
                if (cbx.type == 'checkbox' && cbx.checked == true)
                {
                    counter++;
                }
            }
            if (counter > 0)
            {
                return confirm('Are you sure you want to delete selected records Y/N?');
            }
            else
            {
                window.alert('test');
                return false;
            }
        }
          </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
     <asp:LinkButton ID="Lb_Delete" runat="server" Font-Underline="False"

OnClientClick="return DeleteAlert();" OnClick="Lb_Delete_Click">Delete</asp:LinkButton>
     <asp:GridView ID="GridView1" runat="server" DataKeyNames="ID">
                        <Columns>
                            <asp:BoundField DataField="ID" HeaderText="ID"

SortExpression="ID">
                                                <ItemStyle HorizontalAlign="Left" />
                                            </asp:BoundField>
                            <asp:TemplateField HeaderText="Select">
                                <ItemTemplate>
                                    <asp:CheckBox ID="cbSelect" runat="server" />
                                </ItemTemplate>
                                <ItemStyle HorizontalAlign="Left" />
                                <HeaderStyle HorizontalAlign="Center" />
                            </asp:TemplateField>
                        </Columns>
                       </asp:GridView>

    </div>
    </form>
</body>
</html>

cs:
protected void Lb_Delete_Click(object sender, EventArgs e)
    {
        string strSQL = "", strPrimaryKeys = String.Empty;
        foreach (GridViewRow r in GridView1.Rows)
        {
            CheckBox cbx = (CheckBox)r.FindControl("cbSelect");
            if (cbx.Checked)
            {
                strPrimaryKeys += Convert.ToInt32(GridView1.DataKeys

[r.RowIndex].Value).ToString() + ",";
            }
        }
       // GridViewRow gvr = (GridViewRow)((LinkButton)sender).NamingContainer;
      // string id = Convert.ToInt32(GridView1.DataKeys[gvr.RowIndex].Value).ToString();
      // string id=DataBinder.Eval(e.Row.DataItem, "ID");

    }