Copy the table data to the same table

Question

0.00/5 (No votes)

See more:

I have a 'Page' table with parent and child relations like..

PageId   Name ParentPageId
1         A        0
2         B        1
3         C        1
4         D        2
5         E        2
6         F        4

My requirement is, I want to copy of the above data based on the pageId.

For example if I pass PageId=1, all the relate rows should copy..

My desired output is like this..

PageId   Name ParentPageId
7          A        0
8          B        7
9          C        7
10         D        7
11         E        7
12         F        10

--------------------------------------------------------
For this I used recursion method..
my code is given below..

C#

private void CreatePageCopy(int pId)
{
    try
    {
        objpagebo.Action = "COPY";
        objpagebo.PageID = pId;

        if (dsChildPages != null)
        {
            if (dsChildPages.Tables[0].Rows.Count != 0)
            {
                objpagebo.PageName = dsChildPages.Tables[0].Rows[0]["PageName"].ToString();
            }
        }
        else
        {
            objpagebo.PageName = HfPageName.Value;
        }
        objpagebo.ActiveStatus = "Active";
        objpagebo.CreationDate = Convert.ToDateTime(System.DateTime.Now).ToString("dd/mm/yyyy");
        objpagebo.CreatedBy = Convert.ToString(oEmployeeBO.EmployeeId);

        objpagebo.ModifiedBy = Convert.ToString(oEmployeeBO.EmployeeId);

        objpagebo.ModificationDate = Convert.ToDateTime(System.DateTime.Now).ToString("dd/MM/yyyy");

        DataTable dtGetParentPageId = PageMasterBLL.GetParentPageid(objpagebo);
        if (dsChildPages != null)
        {
            if (dsChildPages.Tables[0].Rows.Count != 0)
            {
                objpagebo.ParentPageId = Convert.ToInt32(dsChildPages.Tables[1].Rows[0]["ParentId"]);
            }
        }
        else
        {
            objpagebo.ParentPageId = Convert.ToInt32(dtGetParentPageId.Rows[0]["ParentPageId"]);
        }

        objpagebo.PageDescription = "";

        dsChildPages = PageMasterBLL.InsertPageCopy(objpagebo);
        int PageIdForCopy = Convert.ToInt32(dsChildPages.Tables[1].Rows[0]["ParentId"]);

        if (dsChildPages.Tables[0].Rows.Count > 0 && dsChildPages != null)
        {
            foreach (DataRow drChildPages in dsChildPages.Tables[0].Rows)
            {
                CreatePageCopy(Convert.ToInt32(drChildPages["PageId"]));
            }
        }
    }
    catch (Exception Ex)
    {

        throw Ex;
    }
}

But this method will work only if a page have child pages with one level...next level ParentPageId is not comming correctely..because here I am taking Parent PageId as last Inserted row,.

Pls give me a solution..

Posted 10-May-13 2:05am

kanamala subin

Updated 10-May-13 2:13am

v3

Add a Solution

Comments

Yuriy Loginov 10-May-13 11:41am

your desired output seems a little off,
did you mean this instead?
PageId Name ParentPageId
7 A 0
8 B 7
9 C 7
10 D 8
11 E 8
12 F 10

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Mojtaba Eng · Answer 1 · 2013-05-10T03:10:00

Combine Child Code and Parent Code :
your Record Code is : Level1-level2-level3-....-levelN
and each dash(-) show one level of generation. this means child code build from parent code + "-" + childNumber :
level 1 :
1
1-1
1-1-1
1-1-2
1-2
1-3
2
2-1
2-2
3
4
5

and using Like you can select child and parent of nodes

debkumar@codeproject · Answer 2 · 2013-05-11T01:31:00

Without knowing your hierarchy of paging, you could write a script to copy these rows. If you notice, you could see, for a particular Page, same difference is maintained between ParentPageId and PageId in original record and copied record. You could take advantage of that.

SQL

DECLARE @maxpageid INT
SELECT @maxpageid = MAX(PageId) FROM PageList
INSERT INTO PageList (PageId, Name, ParentPageId) SELECT (PageId + @maxpageid), Name,
CASE ParentPageId
    WHEN 0 THEN 0
    ELSE (ParentPageId + @maxpageid)
END
FROM PageList

This is not is correct approach. If this copying is one time and pageIds are +ve integer, then it would work fine. I would recommend to use recursive stored procedure/ sql function to do this.

Cheers,

Copy the table data to the same table

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0