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Default value for date type variable

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  1. #1
    Mar 01, 2011, 11:59 AM

    Default value for date type variable

    Hi.........

    I need to know how to set a default value to an item in a grid view....???
    For example, for an int type we'll set default value in "record field" as DefaultValue="00"
    but in the case of string or date type, it is not supporting that kind of statement.............
    Can you help me with an answer????

    Thank you In Advance.....
  2. #2
    Mar 02, 2011, 7:48 AM
    Hi,

    You could use RecordField's Convert.

    Example
    <%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    class Test
    {
        public Nullable<int> IntProperty { get; set; }
        public string StringProperty { get; set; }
        public DateTime DateProperty { get; set; }
    }
    
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            Store store = this.GridPanel1.GetStore();
            store.DataSource = new object[] 
            { 
                new Test()
                { 
                    IntProperty = 1,
                    StringProperty = "something",
                    DateProperty = DateTime.Now
                },
                new Test()
            };
            store.DataBind();
        }
    }
</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Ext.Net Example</title>
</head>
<body>
    <form runat="server">
    <ext:ResourceManager runat="server" />
    <ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true">
        <Store>
            <ext:Store runat="server">
                <Reader>
                    <ext:JsonReader>
                        <Fields>
                            <ext:RecordField Name="IntProperty">
                                <Convert Handler="return value || value == 0 ? value : 'default int';" />
                            </ext:RecordField>
                            <ext:RecordField Name="StringProperty">
                                <Convert Handler="return value ? value : 'default string';" />
                            </ext:RecordField>
                            <ext:RecordField Name="DateProperty">
                                <Convert Handler="return value ? Date.parseDate(value, 'Y-m-dTH:i:s') : new Date(1,1,1)" />
                            </ext:RecordField>
                        </Fields>
                    </ext:JsonReader>
                </Reader>
            </ext:Store>
        </Store>
        <ColumnModel runat="server">
            <Columns>
                <ext:Column Header="Int" DataIndex="IntProperty" />
                <ext:Column Header="String" DataIndex="StringProperty" />
                <ext:DateColumn Header="Date" DataIndex="DateProperty" />
            </Columns>
        </ColumnModel>
    </ext:GridPanel>
    </form>
</body>
</html>
  3. #3
    Mar 02, 2011, 7:51 AM
    k....
    Thank you.....
    I'll Check it once........
  4. #4
    Mar 02, 2011, 8:53 AM
    Hey it worked.... Thnaks once again for ur help.......
    I have one more doubt....
    Can we assign default value for date as " No Date found" or something in the form of a string................?????
  5. #5
    Mar 02, 2011, 10:57 AM
    Replace 
    <ext:DateColumn Header="Date" DataIndex="DateProperty" />
    with
    <ext:Column Header="Date" DataIndex="DateProperty" />
    and 

    <ext:RecordField Name="DateProperty">
    <Convert Handler="return value ? Date.parseDate(value, 'Y-m-dTH:i:s') : new Date(1,1,1);" />
</ext:RecordField>
    with
    <ext:RecordField Name="DateProperty">
    <Convert Handler="return value ? Date.parseDate(value, 'Y-m-dTH:i:s') : 'No date'" />
</ext:RecordField>
    If you need to format how dates look in a column please use Renderer.
  6. #6
    Mar 04, 2011, 3:49 AM
    I tried it.. It worked But im getting date for remailning data as "Sun Mar 21 2010 00:00:00 GMT+0530(Indian Standard Time)".
    If i use renderer, im not getting data at all.... The total table is appearing blank....
    I want the date to be displayed as "date-month-year"...
    Pls ge me a sugession....

    Thanks,
    Emon
    Last edited by emon; Mar 04, 2011 at 3:52 AM.
  7. #7
    Mar 04, 2011, 4:19 AM

    No need

    I got the solution from your previous replies... Thanks for your help
  8. #8
    Mar 04, 2011, 5:00 AM

    One more issue

    The default value is displayed as "NaN-Nan-0NaN" instead od "nodate" even i i use

    <Convert Handler="return value ? Date.parseDate(value, 'Y-m-dTH:i:s') : 'nodate'" />
    But while in exported file it is displaying "nodate"
    :(
    Last edited by Daniil; Mar 10, 2011 at 9:30 AM.
  9. #9
    Mar 04, 2011, 1:32 PM
    Please provide a simplified .aspx page to reproduce (like this one that I posted in my first post of this thread).
  10. #10
    Mar 05, 2011, 3:33 AM
    Is there any solution????
    Last edited by emon; Mar 08, 2011 at 3:11 AM.
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