DataSource Controls :: Parent Child Table In Sql?
Feb 26, 2010
I have a table that needs sorting by its hierarchial structure of parent-child.
An example of my table is below
ID
Name
Parent ID
Sort Order
1
iPhone Dev
0
1
2
iPhone Lounge
0
2
3
Web Development
0
3
17
Javascript
3
1
24
CSS
3
2
25
prototypes
17
1
As you can see above, my table structure follows this pattern
[Code]....
My overall aim is to have the sql order the table for me, and by using this new "depth" column, I will be able to indent by categories in the menu on the front end, you have probably seen this before, but all the tutorials I have read dont really explain it very well, or assume you are sql savvy.
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Jan 16, 2010
I have two tables dept and employees those table have parent and child relation ship link column is deptno i want to delte department even this departmetn contains employees i want to write storedprocedure for first delte employees and after department if i wrtie these two querys in storedprocedure will i get any problems
Begin
Delete from tbl_employees where Department_Id=@Department_Id
Delete from tbl_Department where Department_Id=@Department_Id
RETURN
END
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Dec 2, 2010
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BEGIN delete from parent_dtl where order_dtl_id= 66 END
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Jun 4, 2010
I have a table that have LibraryID and LibraryParentID.
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Feb 4, 2010
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Jul 13, 2010
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[code]....
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Jan 15, 2010
Here is my table and data of these tables
Table name: Code
CID Code
1 abc
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ID Name CID
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Resultant Table:
ID Code Name
1 abc a
2 abc Null
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Jan 11, 2011
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[Code]....
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Feb 17, 2010
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[code]....
I am getting the following Error:
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Simple and blunt: my cascading dropdownlists clear when a postback occurs. Does anyone know a quick way around that?For more information, read on...
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Sep 1, 2010
a FormView that is linked to SqlDataSource1a Repeater control (inside the formview) that is linked to SqlDataSource2 Thus representing a simple "1 to many" or "parent/child" relationship in the database!
SqlDataSource1 is simple in that it just retrieves a straight set of records from a table and they are displayed back in the FormView (nothing special happening there).
SqlDataSource2 has parameters that filter the contents of the repeater based on the record that is shown in the Formview. This would normally be simple enough to set up by setting the parameter to the formview.selectedvalue property.
HOWEVER - THE PROBLEM ARISES...
The formview has multiple DataKeyNames because the table that the SqlDataSource1 links to has a compound key. So to filter the Repeater correctly SqlDataSource2 needs to map 3 parameters to 3 data key values in the formview.
I've tried setting the SqlDataSource2 parameters to:
<SelectParameters>
<asp:ControlParameter ControlID="FormView1" Name="Parameter1" PropertyName="DataKey(0)" />
<asp:ControlParameter ControlID="FormView1" Name="Parameter2" PropertyName="DataKey(1)" />
<asp:ControlParameter ControlID="FormView1" Name="Parameter3" PropertyName="DataKey(2)" />
</SelectParameters>
but it doesn't seem to like that approach. I'm expecting the answer is something similar .
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Mar 18, 2010
I am trying to use the TableApapterManager.UpdateAll to insert values to master and child table. I had set the relation to cascade for update in the dataset and the HierarchicalUpdate to true. But stil when I run TableApapterManager.UpdateAll(dataset), I get a foriegn key violation error. Following is the code I used:
int ID;
DAL.Datasets.dsMembers.MembersRow rwMem = m_dsMembers.Members.NewMembersRow();
rwMem.u_name = mem.Name;
m_dsMembers.Members.AddMembersRow(rwMem);
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m_dsMembers.MemPhones.AddMemPhonesRow(rwmemphn);
m_adpMgr.UpdateAll(m_dsMembers);
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The statement has been terminated."
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Aug 19, 2010
I have the next aspx page.
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.Master" AutoEventWireup="true"
CodeBehind="newsEditor.aspx.cs" Inherits="ExpertSiteV2.newsEditor" %>[code]....
In some situation i want to delete all the contents of Panel1. I write in the code:
Panel1.Controls.Clear();
But it doesn't work and i get message: Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: Page cannot be null. Please ensure that this operation is being performed in
the context of an ASP.NET request.
Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: [InvalidOperationException: Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.]
System.Web.UI.ScriptManager.get_IPage()
+373832 System.Web.UI.ScriptManager.OnPagePreRenderComplete(Object
sender, EventArgs e) +54
System.Web.UI.Page.OnPreRenderComplete(EventArgs
e) +8698462
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean
includeStagesAfterAsyncPoint) +1029
Blockquote
What's wrong? Or how should i do this properly?
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Feb 25, 2016
With reference to this article [URL].... I'm trying to access parent gridview datakey in child gridview edit row event. Code below.
protected void grvSubmittedExpensePerMachine_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView grvSubmittedExpensePerMachine = sender as GridView;
grvSubmittedExpensePerMachine.EditIndex = e.NewEditIndex;
string site=this.grvSubmittedExpenses.DataKeys[((row.NamingContainer as GridView).NamingContainer as GridViewRow).RowIndex].Value.ToString();
[code]....
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To achieve this I write following code (.cs) : in parent form:
void ShowBtn_Click(object sender, EventArgs e)
{
StringBuilder jScript = new StringBuilder(); [code]....
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I am using a collapsible child gridview inside a parent gridview. When I click on the expand image, the data to displayed is put up correctly, however when I make some changes in the child gridview, they seem to be lost!! That is, the changes do not get reflected in the database.
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Aug 23, 2010
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I have created a search page for web application that will allow a user to search the database based upon employee name or supervisor name. It is a multiple table database that is linked together by an unique employee number column, primary key in people and foreign key in supervisor. I have a parent/ child datalist used to display the record. When searching by the employee name it will return the record correctly if there is a record found. However, if I search by supervisor name and there is no match for the supervisor name, it will return all the records and create the parent datalist with all the employee details there, but the child datalist with the supervisor information is not display as there is no record with that supervisor name.
[code]...
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Jul 21, 2010
since APS.Net 4.0 I have a curious problem with an event.
There is a FormView and inside of the EditItem there is a GridView. In the Footer of the GridView I put Controls for inserting records.
But when I fire a markup defined RowCommand of that GridView then the same event is getting fired for the Parent FormView. First I had 'Insert' as the CommandName and so I was getting the Error that my FormView had to be in insert mode to insert a record. Then I changed the RowCommand of the GridView to 'xxx' and I got also the RowCommand 'xxx' at the RowCommand eventhandler of the Parent FormView.
The project was migrated from .Net 3.5 a few days ago, but nothing was manually changed in the code/markup. And the problem was not there with the "old" framework.
[Code]....
Of course, I could simply change the CommanName of the LinkButton e.g. to 'InsertChild' but I would like to know:
Is this a known change or a bug of ASP.Net 4.0?
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{
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foreach (TreeNode node in tvBaseline.FindNode(parentNode).ChildNodes)
{
if (node.Checked)
treeNodeCollection.Add(node);
}
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}
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