Web Forms :: Connect A TreeView To A Sql Table?
May 22, 2010I am trying to connect a Treview to a sql table. I have a class to handle the data.
I do not know how to link that to a Treeview. Only options 2 get are XML File or Site Map.
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Web Forms :: Table Download - How To Connect To Database
Dec 23, 2015This is Table Download in database
Id
DownLoadTitle
Url
DownloadToken
ExpiryDate
Hits
ExpireAfterDownload
Downloaded
and below is code that connect to this database
string downloadtoken = Page.RouteData.Values["downloadtoken"].ToString();
DownloadsDbEntities db = new DownloadsDbEntities();
var data = from d in db.Downloads
where d.DownloadToken == downloadtoken
select d;
Download obj = data.SingleOrDefault();
[Code] ....
But in above code I don't know how it call table from database I never seen this kind of code it doesn't connect to database
I want above code but connect to sql and read table Download from database in sql server. How I can do it?
Web Forms :: Build Treeview From Master Detail Table?
Jan 20, 2010I am building treeview using asp.net 2.0/3.5 from master detail table.
ParentTable Value ---ChildTable Value ---GrandChildTable1 Node ---GrandChildTable1 Value ---GrandChildTable2 Node ---GrandChildTable1 Value
I have created something like this to populate node values. But I am not sure how to display GrandChildNode and values.
[Code]....
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Jan 27, 2011I have populated a TreeView using data from a "documentCategory" table. This code works fine and shows the parent and child nodes correctly.I now want to show the relevant documents under each of the categories. The documents are stored in a "document" table and are related to the "documentCategory" table via a documentCatId field (ie, documentCategory.dcId = document.documentCatId).For example, I might have 2 documents under Employee->Manuals->Handbook->Asst Managers.How can I add these Leaf nodes? I have included my code below.
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[Code]....
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Category 1
Product 1
Toy 1
Toy 2
Product 2
Toy 3
Toy 4
more categories.. The database table has a single table called "Category". The ParentCategoryId points to the Category which is the parent. So, for the Category 1 the ParentCategoryId is null since it is parent. For Product 1 the ParentCategoryId is that of the Category 1 id and for Toy 1 the ParentCategoryId is that for the Product 1 id.
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public void BuildTree(List<Category> categories, TreeNode treeNode)
{
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Mar 1, 2011Periodically a rash of occurrences of the following error happen. I believe they're the result of hack attempts. Whether that's the case or not, my question is how can I handle the error? I want to avoid unhandled exceptions. The TreeView control is just
a standard .Net TreeView control, not a custom one. If you suggest a code solution, please code it in VB.Net as that's what I'm using.
Message: Input string was not in a correct format.
Stack Trace:
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.Web.UI.WebControls.TreeView.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.WebControls.TreeView.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
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[Code]....
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View 1 RepliesForms Data Controls :: Adding Values To A Table From Another Table Via Dropdown
Jan 3, 2010I am fairly new to ASP.Net and web programming in general and I am having issues trying to add values from a dropdown list in my gridview to another table.
Here is my scenario. I have 2 tables in my SQL Express DB. When editing the values of table2 in a gridview, I would like to show some data from table1 in a dropdown so users can select a value from table 1 and enter that value in table 2.
I have the Gridview setup to show table2 data.
I created a field template and inserted my dropdown list and linked it to my table1 data source.
When I run my web form, I can click to edit one of the fields in the gridview, and my dropdown list correctly displays the data from table 1, but when I try to update the table2 with the dropdown value, it doesn't correctly update. The row in table2 never updates.
posting the dropdown value from table 1 into the appropriate field in table2..
Again, I am new to this and have been following the tutorials etc on this site, but can't find one pertaining to this topic.
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[Code]....
[Code]....
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Mar 22, 2010I am using Tree view to display Categories & SubCategories under it. It's working fine. to create a Tree View I had used,
http://aspalliance.com/732.
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