I have a table Structure
filename AKA
12-3-09.pdf 443567
12-3-09.pdf 345678
12-3-09.pdf 456789
3-3-10.pdf 78901
filename AKA
I want to output as 12-3-09.pdf 443567,345678,456789 3-3-10.pdf 78901.
I have two tables - dt(Mods) and dt(Mods2) - I am trying to create a relationship between them. So dt(mods) has department, category and item columns dt(mods2) has parentDept, Parentcategory and parentItems Now I need add them to a dataset with a relationship key - Something like this but with three cloumns
Dim ParentCol As New DataColumn, ChildCol As New DataColumn
i created register page with unique primry username field , when customer enter exsiting username the register process will not complete and this error msg will appear Server Error in '/WebSite1' Application. The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again. 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.Data.OleDb.OleDbException: The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again. Source Error: Stack Trace:
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Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4955 how can i write it when customer press register button with duplicate username?
I hava a textbox and button in my project. I want the button on click to add a new column inside the database "Trial.mdb" , table name "table1". The column name will be text typed in the textbox and it will be text type. How could I do that? with a sql code in asp:accessdatasource or in my code behind ?
View 13 RepliesI have a query which returns multiple columns from the database using LINQ
var donors = from d2 in db.Donors
where d2.Status == "Pending"
select new { donorID = d2.donorID, bloodGroup = d2.bloodGroup, contactNo = d2.contactMobile, status = d2.Status };
now I want to display the results in different Labels accessing one column value from donors resultset.
ex:
Label1.Text = donorID;
Label2.Text = bloodGroup; ...and so on
is it possible to access grid column by name not by index grid.columns["name"] because if i add new column i must change all numbers
View 1 RepliesI have the default membership table that was added automatically, then just used server explorer to add more columns, like FirstName, LastName, etc. In my code I can access all the default columns, but not the ones I created. Any thing special I need to do?
Here is how I access the table. using user. gives me all columns, but the one I created.
string userName = User.Identity.Name;
MembershipUser user = (MembershipUser)System.Web.Security.Membership.GetUser(userName).ProviderUserKey;
I have a GridView :
[code]....
I want to query the value of a particular field in a DB and if it's true, display the LinkButton. if false, I want the linkButton not to be displayed.
is there a way to access the GridView programmatically and make visible certain of its columns or manipulate its items ?
I have a Access DB. I have relations with two tables. For example In my table1 I have three columns as T1ID, Name, Description and Tbale2 I have three column as T2ID, T1ID which is a foreignkey from Table1 and desc.
What I want is that : for example, I wanna copy the columns from table2 which has the value of 2 under the foreignkey field and I wanna insert them into table2 again with the value of 3 under the foreignkey field !
I have a gridview. In my RowDataBound handler I'm doing some things to columns, and accessing them like this for example,
e.Row.Cells(7).BackColor = System.Drawing.Color.Salmon So, of course when I rearrange the order of my columns everything breaks.
Isn't there some way to give an ID to a column, and say e.Row.Cells("TotalColumn_ID") ?
Will this work? Do columns have IDs?
-7vf- I write a program by c# to check and retrieve data from database
The problrm:I have one table(1), I want to make update for that table(1) that is by compare the one column in table(2) with the right side from one column in table(1), so if there is any similarity it will retrieve the data and if there is no match just it will make the record empty(null) "the data type of retrieving columns: number 'double'", but the problems is:
I try to retrieve 11 columns, 7 of them are empty .the program run with out error ,but it will retrieve some records with full data 11 columns, but some of records has only 5 columns have data and 7 columns are empty (these records when I run the program did not retrive any columns, it give me empty records!!)
this is the code :
while (or.Read())
{ or.GetValues(field); OdbcCommand oc2=null;
[code]....
I want to retrive all data which are empty or null and all data
I've created a gridview having an Id column whose visible property is set to false, because I don't want users to see that column. Now when user clicks on the edit button in a particular row I want to fetch the id of the cell in the Id column of that particular row. So, for that purpose I used -
void GridView_RowEditing(object sender, GridViewEditEventArgs e)
{
string Id = GridView.Rows[e.NewEditIndex].Cells[0].Text;
}
In the above code, Cells 0th index is the column index whose visible property is kept false. Now the problem I face here is that if the columns visible property is true then I can easily fetch the contents of that particular cell with the above code. But, in invisible mode I get only "" value i.e. I don't get the text or the content of that cell. Why does it happen? I don't face this problem with DataGrid Control used with 1.0 and 1.1 version. And how to resolve it or in this case is there another way of fetching the content of the invisible cell?
i am making relation between two datatables and m getting this error
in this ds.Tables(0).Columns("In_ID") datatype is string
ds.Tables(1).Columns("row_id") datatype is integer
how i do the type casting here to make dataset relation
ds.Relations.Add("Rel_1", ds.Tables(0).Columns("In_ID"), ds.Tables(1).Columns("row_id"), True)
I have search for a long long time and could not find a solution to access to grid view's column properties. I have binded a grid view through this method, the bindGridView function will return a table with columns and rows.
The problem here is I cound not access to columns properties such as Grid_View.Columns.Count or Grid_View.Columns[0]."something". It seems like the grid_view does not have any column. But I can access to the Rows properties.
I have put this code within a (!IsPostBack) and set the AutoGenerateColumns to true?
I need to access to columns badly as I need t add additional column to the binded grid view.
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I'm using the GetOleDbSchemaTable to get column info from an access db, column_name and description, but getting an error that the bind statement can't get the properties. I know its there because I can response.write it from its table, schemaTable.Rows(i)!DESCRIPTION.ToStringdo I have to bind it differently than when binding actual data from a table using the column name for reference?System.Web.HttpException: DataBinding: 'System.Data.Common.DataRecordInternal' does not contain a property with the name 'DESCRIPTION'.
View 2 RepliesI want to show columns in gridview based on access rights/roles.That is i want to show parents column if there is parents login or else i want to show students column if there is students login.
View 2 RepliesI need to access the controls dynamically created template fields at run time in datagrid in post back event. Is there any way to retrieve the values in post back event? Or else give the ideas to acheive my requirement. I need to create no of rows and columns as text box as per user input. After fill the values to text box , i need to access the values in submit button.
View 1 RepliesI want to get the values from the Invisible rows from my gridview. Â here is my code.
<asp:GridView ID="gvTeam" runat="server" Width="900px"
AutoGenerateColumns="False" BackColor="White" BorderColor="#CC9966"
BorderStyle="None" BorderWidth="1px" CellPadding="4">
<Columns>
<asp:BoundField DataField="FULLNAME" HeaderText="NAME" />
<asp:ButtonField DataTextField="EVALUATION" HeaderText="EVALUATION"
Text="EVALUATION" CommandName="select" >
[Code]...
need Users to be able to be friends with other Users (Users are kept in the User table) im trying to create a "Friends" table so they can relate to one another.I need the UserID stored along with FriendID, UserID is of the current user and FriendID is related to the UserID of the friend. ARGh so confusing. Im getting lost even talking about it again, basically the way ive written my code i need the FriendID to relate to the UserID of the user table so i can find the person im after so I can display there credentials on the current "UserID" page but I also need some way to find out all the current UserIDs friends
View 1 Repliesi m developing an inventory module in which i have a GRN(Goods Received Note) form, the user opens the form and enter the items which are coming from itemMaster table. I want to add the grn entry in a table named GRN and all its respective item details in other table and also want to update the instock quantity in item Master table. how can i achive this there are multiple items in a grid in grn form which are to be stored in a table and only 1entry of grn in grn table and also update the instock Qty in the itemMaster Table,,...i ned write my logic using Stored procedures and ADO.NET i m totally confused
View 1 RepliesI make ASP.NET MVC3 application for spa and I've encoutered problem with M:N relationship. I've got this model Each Insurance Company has different pricing for each patient medical indication, so sample data looks like this:
IC
Indication
Patient
IC1
Indication1
Patient1
Patient2
Indication2
Patient3
[Code]....
And I don't know how to make Edit with possibility of changing not only Indication but IC to.
There have been several similiar questions but I am still confused. Take the following code as example:
<% Html.RenderAction("partial"); %>
@{Html.RenderAction("partial");}
the aspx page runs well but Razor throw an error: "No route in the route table matches the supplied values." And even this is wrong, too.
Html.RenderAction("partial");
So why? What's the "@" really mean? What's the difference or relationship between aspx and cshtml?
I have two columns first name and last name , that have duplicates, how can i remove the duplicates and only leave the distinct members intact?
View 6 RepliesI have a GridView that has several dynamic columns (I do not know how many at design time and it could be 0-12 columns, hence need for dynamic columns). I have the columns in the grid and data bound to them - works great. There are other standard, design-time TemplateField columns with TextBox controls in them. These are bound with values that the user can edit. The grid is posted back via a Submit button. My question is "Why does gv.Columns.Insert() cause all my TextBox data to be null on Postback, but gv.Columns.Add() works like a champ?"
protected void BuildColumns()
{
// The first column to begin to insert the columns in the GridView
int columnIndex = 5;
BoundField aoColumn = new BoundField();
aoColumn.HeaderText = "New Column 1";
gvMyGrid.Columns.Insert(columnIndex, aoColumn); // kills txtQuantity.Text on postback
gvMyGrid.Columns.Add(aoColumn); // works fine
columnIndex++;
foreach (MyEntity my in _myEntityCollection)
{
BoundField myColumn = new BoundField();
myColumn.HeaderText = String.Format("{0:d}", my.StartDate);
gvMyGrid.Columns.Insert(columnIndex, myColumn);
columnIndex++;
}
}
I then go on to assign values to these BoundFields in the _RowDataBound method and all of this works great. However, when I post back and try to reference some TextBox and they are all null. And yes, I have the BuildColumns() call wrapped in if (!IsPostBack) on Page_Load. Of course I would like to use .Insert() so that the columns can go in the proper location and not at the end of the Columns array.
the developer who wrote this code is no longer with us and there are absolutely no comments whatsoever for us to know whats happening. Me and my other co-worker are just learning .net and hence not that much experts. can some one please tell us what the code does in both the files below and how they are related to each other ( we are very +VE that they both are related) first file. its called products.aspx. the code is below
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