Directoryservices.directorysearcher Loop Has Error A Column Named 'cn' Already Belongs To This Datatable?
Oct 4, 2010
I have a function that searches AD for members of various groups. If I remove the loop, I don't get the error "A column named 'cn' already belongs to this datatable", however, I need to iterate through each OU.
Function getCOMDLNames(ByVal searchStr As String) As DataTable
Dim MySearchRoot As DirectoryEntry = New DirectoryEntry("path", "usr", "pwd")
Dim MyDirectorySearcher As New DirectorySearcher(MySearchRoot)
[code].....
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Apr 18, 2011
I am try to filter some data and add to another datatable. While Run time the Error is shows Column *** already belongs to another dataTable Here My code:
[Code]...
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Sep 8, 2011
Scenario: FormA has a DataGridView with a DataTable as it's DataSource. The DefaultView of the DataTable is set to a particular filter, say "UnitFreight < 2.00". The user selects multiple rows then selects a context menu item to open up form2. Form2 does a bunch of stuff and in this example it will change the UnitFreight value in the selected rows on form1 to say 2.27. It also raises an event in form1 to adjust attribute cells such as UnitPrice.
The issue is that doing the above example puts the selected rows out of the range of the applied filter and I believe this is the issue because I end up getting a "Column named UnitPrice cannot be found" error. This is happening during the update of those attribute columns. I'm guessing the row has been filtered out so there's no column to be found. If I do the update without the filter applied it works fine. So my question is, what's the best approach to updating the data in this situation. I've started converting the updates to work against the DataTable directly instead of the DataGridView.
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Jan 12, 2012
This error is occuring while adding one datatable from a dataset to another ."DataTable already belongs to another DataSet."
dsformulaValues.Tables.Add(m_DataAccess.GetFormulaValues(dv.ToTable.DefaultView.ToTable(False, strSelectedCols)).Tables(0))
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Mar 4, 2009
Here is my DataTable columns :
ID Note Detail
I want to write sth like this :
//below code block is not the right syntaxFor each q in dtDataTable.Column("Detail)
strDetail = Row of Column Detail
Next
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Nov 3, 2006
Column 'XX' already belongs to another Table?
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Nov 17, 2011
i want to read table row by row i have table with two columns but i want to read the first column only row by row her's my code
Dim col As String = "SELECT users.user1,users.valueid FROM users"
Dim cmd As New OleDbDataAdapter(col, CON)
Dim ds As New DataSet
[Code].....
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Feb 7, 2012
I am getting a syntax error " Missing operand after 'Price' operator" with the following code, which should be right but obviously isn't. Any thoughts on where the error is?
table.Columns.Add("ADR Price", GetType(Double))
table.Columns.Add("ORD Price", GetType(Double))
table.Columns.Add("Currency Price", GetType(Double))
[code].....
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Mar 15, 2009
I have a datatable which has 5 column. It is possible to copy only its 2 column in and save it into new datatable.I used this code but it copies all the 5 column
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj).CopyToDataTable
i used this one but it is not supported
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj.item("Column1"), obj.item("Column2")).CopyToDataTable
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Aug 18, 2011
I am trying to display value of the field ("UserID") for every row exists in datatable to checkboxlist(make the checkboxlist item selected).
I used for loop, but only the field value from last row of RoleUsers table is selected in the checkboxlist.
Here is my code
Private Sub DisplayRoleUser()
Dim conn As SqlConnection
Dim cmd As SqlCommand
[Code].....
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Feb 15, 2010
I'm trying to make query in a table that has a column named "First Name"
dim info = from md in employees _where md!first name = "test"
How can I use the field "first name" in this query.
I've tried "first name" and ""first name"" but neither works.
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Apr 30, 2012
I am using System.DirectoryServices.AccountManagement to try to add a local account to the local administrators group with the following code but am getting the error below on the group.Members.Add(usr) line. Both usr and group are created as objects and if I create a Test group, I can add the user to the Test group. I know the group object is the local administrators group and not the domain group because i changed the description on the local administratrors group and the group object is correct so it appears to be something specific to the local administrators group.
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Aug 11, 2009
I'm trying to develop an app to import a spreadsheet into an Access 97 database. I'm using Visual Studio 08. I'm stuck on the first step! I'm trying to use the Data Source Configuration Wizard to connect to the database, and when I get to the point where I choose which tables to add, I get the following error:
<COPYtblMHPuse>
Could not get column information for database object named 'COPYtblMHPuse' This is for any table I try to add.
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Nov 1, 2011
some one answer me.there are some warning show to me "Column named Order_ID cannot be found. Parameter name: columnName" at underline of this code.
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Mar 17, 2010
I have a table named fec in which i hv column named EndDt having Date/Time Data type.Now i want to display those records in my report which have EndDt less than Date i pick from DateTimePicker and month is current month.Private Sub DtpDefault_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DtpDefault.ValueChanged
[Code]...
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Jun 2, 2012
I am wondering if Global.asa can handle a procedure like this:
Protected Sub errore(tipo As Int16)
'Response.Write(Err.Description) 'or your own custom error message
Dim msg As String
[CODE]...
The idea is to have a central place to put the routine in instead to copy it into every .vb file that belongs to each .apsx code file.
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Apr 17, 2008
I am trying to get the AD Properties from a Search that I do. When I do so I get this as a result "System.DirectoryServices.ResultPropertyValueCollection". How do I get the value? I know that it is a collection but everytime I try I am not successful.
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSearch.Click
Dim resEntry As SearchResult
Dim lstItem As New ListViewItem
Dim currentEntry As New DirectoryEntry
[CODE]...
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Sep 7, 2011
I have an application that resides on a network drive.When the program runs from an XP machine on the desktop or over the network the program works for any user.When it runs from Win 7 on the desktop it works for everyone, but when it runs from Win 7 over the network it fails for users with fewer permissions.Below is the code.It fails on the last line "Dim searchResult As SearchResult = directorySearcher.FindOne"..[code]Can anyone tell me what is missing in the network permissions?
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Jun 30, 2009
I am using datarow for one table adding records by datarow1=datatbl.newrow method. Then immediately i want to add records to other table so while i am using datarow1=datatbl2.newrow method, its giving me error as "Row already belongs to other table"
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Dec 21, 2009
I have been getting the error "this row already belongs to this table". I have trired this but the error keeps happening. table.Rows.Add(table.NewRow()) table.Rows.Add(row)
How do I know if the row is already in the table. How do I add a new row?
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May 26, 2011
I need to create 3 folders (named as In,Proc,Error) in C:Ram directory. First I need to check for folder existence in directory. If any of them not present need to create missing folder. If all missed need to create all 3. Could anyone suggest a simple looping code in VB.NET for this requirement .
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Jun 23, 2009
Dim mysqlconn As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=.ccsinventory.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True")
Dim myinvdataadapt As New SqlDataAdapter("SELECT * FROM inventory", mysqlconn)
Dim myinvcmdbld As New SqlCommandBuilder(myinvdataadapt)
[code]....
Why does this not work and why am I getting this error?I am under a deadline of less than 20 hours to get it working.
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Mar 17, 2010
I am getting this error:{"An attempt to attach an auto-named database for file D:WORKDocStoreDocStoreDatabaseDocStore.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share."}
I verified the file exists and is checked out for edit. This is in my app.config:
<connectionStrings>
<add name="DocStoreEntities" connectionString="metadata=res://*/Database.DocStore.csdl|res://*/Database.DocStore.ssdl|res://*/Database.DocStore.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|;Integrated Security=True;Connect Timeout=30;User Instance=True;MultipleActiveResultSets=True""
[Code]...
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Feb 5, 2012
I have a data table, i want to add a new column on that table, the data in that new column will depend in the data from another column. Now i can think of two ways to accomplish this, first is loop through the whole table and do the statements to get my new columns appropriate data. the second approach would be to give the new column an expression, then convert the table to xml (to remove the expression) then convert the xml string back to datatable.
Now, is there any other way around this? what could be the most optimized way in solving this task?
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Jun 5, 2011
This is something that's been bugging me for a while. Say I have a dgv with several columns and rows of data. Many times while working with the grid, it's necessary to know the number of the column, but all you know is the column header name, or vice versa. Is there any internal command that will return these values, or is there at least a better solution to the problem than making a function that loops through every header name until you find the one you want? It just seems so inefficient.
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Oct 27, 2011
After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
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May 24, 2010
This webservice is almost converted form VB to C#, except I get this error shown below on the DataRow arow object when I use it in the foreach statement below to populate the Results Class with a DataSet Object...
Error: A local variable named 'arow' cannot be declared in this scope because it would give a different meaning to 'arrow', which is already used in a 'parent or current' scope to denote something else
using System;
using System.Web;
using System.Collections;
[code]....
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Jan 7, 2009
Just curious is there a "next row" method when looping through a datatable? Basically, I want to be able to go to the next row without having to go to the end of the loop. See my coded example:
[Code]...
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Apr 24, 2012
Possibly a dup but I tried googling and searching here before posting. Assume a 2 column table with columns Age (int) and EmpName (string) A datatable can be converted to IEnumerable by a simple dbTable.AsEnumerable() Now to perform any Linq you must know the column names since intellisense will not pick it up due the fact that AsEnumerable has returned a bunch of datarows that you can enumerate. I have used a small 2 col table but for tables with many columns it is a pain. So most of the time we try something like
[Code]...
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Feb 23, 2010
I am using a SQL query to fill a datatable from 2 associated tables. The first table has Products and the second has associated addonpackages. When I loop through my Products I am able to get all of the addonpackages for the first product but after that the datatable is only getting populated with the last addonpackage for each product. ie:
product 1 - all 6 packages are added tp the datatable
product 2 - only package 6 is added to the datatable
product 3 - only package 6 is added to the datatable
...and so on
My query follows. Why I am getting all of the info for the first product but just the last item for all others. No matter which product I would query first, I get all of the associated data with it but only the last for all others.
SELECT Products.ProductNumber, Products.Name, Products.Mnemonic, AddOnPackages.PackageNumber,
AddOnPackages.Name AS PackName, AddOnPackages.Mnemonic AS PackMnem
FROM AddOnPackages RIGHT OUTER JOIN
Products ON AddOnPackages.ProductNumber = Products.ProductNumber
WHERE (Products.Name = @ProdName)
ORDER BY Products.ProductNumber, AddOnPackages.PackageNumber
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