Forms Data Controls :: How To Compare The Values Of The Columns
May 23, 2010
If I have a GridView with 4 columnsthree of them displaying different prices of the same product and the fourth one should display the cheapest..how can I compare the values of the columns ??
is there an easy way to compare two columns in two datatable to see if they match? I need to check if the values in column["x"] of datatable1 occur in column ["y"] of datatable2, without iterating through both tables (for each value in column of dt1, check column of dt2). I tried:
foreach (DataRow dr in dt1.rows)
if (dt2.rows.find(dr["x"]) but this checks the whole row and if finds an "x" in any column, "if" condition is true. I need to only check one column of dt2. Tables have different columns but the same primary column and that's what I need to check
I have a detailsview data control connected to a datasource. i converted all the bound fields to item templates and they have all been converted to textboxes. i need to compare values entered in one textbox and output the value in the other. I have attached a snippet of the code below. but its not working.
I want to get the values from a cell in a gridview so can I do that without selecting a row. Its something like this I have a drop downmenu and based on the value selected in the dropdown menu I have to change the presentation of gridview without going to the database.
I have a gridview which has TWO rows (assume this will always be the case). The grid is set in a way that whenever "Edit" is clicked, whole gridview turns into edit mode. (I mean all the rows)
Name Age earth 1 mars 1 <<Edit>> <<Update>>
I want to compare "Age" field, how can I do that. User must put same Age in both the rows
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 -
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'm just wondering if anyone can assist me with this gridview problem
I have this Sql statement that outputs a gridview like this
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
* These columns are placeholders
I want to include a footer total that looks like
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
Final Total 4
Im not binding the database to the gridview via design view I'm binding it programatically in the default.aspx.cs file
So far the only tutorials I've encountered are ones the have the database bound through design view and gridviews with only one column that can be added. In my particular example I have multiple columns that need to be added and I have already bound the data to the gridview.
I have a gridview to which I am binding a database values. My requirement is to bind the values to the gridview by sorting 3 columns as a default sorting with ASC order in one column and descending order in other two.. Can I do it in my .Net code or should I do that in Stored Procedure? If it can be done in .net code Can you tel me how it can be done.
Is it possible to first add controls (ie. CheckBoxes) to a GridView with AutoGenerateColumns set to true. Then to click a single save button which loops thru the controls in the GridView, gets their values (ie. Checked/Not Checked) and then saves those values to a database?
I have a datagrid whose columns are autogenerated (based on the results from an SQL SELECT query). However, I need to retrieve values from certain cells across the datagrid, using the following code to step through the results.
[Code]....
I need to specify all my columns using TemplateField?
SELECT PROMCODE ,STARTDATE ,ENDDATE , .... AS STATUS ( does here I should use when..case? or use subquery? I try use Case..but get syntax error)from Table
I need to compare 2 DataTables that do not necessarily have the same structure. One dataTable is the master (dtDB), the second dataTable (dtFORM) is what will have the changes, if any, but not necessarily all of the columns of dtDB. In both tables the first column will be the primary key and all columns that dtFORM has, dtDB will have.
There is another DataTable (dtResults) that will flag the differences
I need to know how to compare these two columns from the column "Acnv description;" to "Value" as mostly the values from "Dekking id" to "Acnv_id" would be mostly common.
How to compare the values sepately FROM "Acnv description;" to "Value" Columns values IF the Columns "Dekking id; Dekking; Acnv_id;" MATCHES.
Dekking id; Dekking; Acnv_id; Acnv description; From ; To; Value
I am updating a gridview. Problem is that when I hide certain fields that I do not want the user to update, they lose their values ie. the data is wiped out in the field unless I show them on the grid and make them writeable. Is there a property I need to set for the field to retain the value when the grid is updated or is this in the sql statement?
I'm just stumped on what to do with this code, I'm just trying to implement a 'no duplicates' catch on my insert customer form, but it just slips through my if statement to the else everytime. This is the source. Also I tried a .Equals with the same results :(
Protected Sub srcAllClients_Inserting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs) Handles srcAllClients.Inserting 'Establish Variables Dim emailAddress As String Dim srcUsers As SqlDataSource = New SqlDataSource() srcUsers.ConnectionString = ConfigurationManager.ConnectionStrings("ISSD21ConnectionString").ConnectionString Dim view As DataView view = DirectCast(srcUsers.Select(DataSourceSelectArguments.Empty), DataView) srcUsers.SelectCommand = "SELECT EmailAddress FROM ISSDClients" srcUsers.DataSourceMode = SqlDataSourceMode.DataReader Dim reader As IDataReader reader = DirectCast(srcUsers.Select(DataSourceSelectArguments.Empty), IDataReader) emailAddress = FormView1.FindControl("txtEmail").ToString While reader.Read() If reader("EmailAddress") = (emailAddress) Then lblError.Text = "Your Email is NOT Unique!" 'this is where we cancel the update and return an error Else lblError.Text = "Your Email is Unique!" 'nothing needs to happen, maybe just tell them that it went through End If End While reader.Close() End Sub
In "query" there are several columns, 2 of them are NIIN and Qty. In "objViewDDRT" there are only 2 columns, they are NIIN and AvailBalance.
What I need to do is for each row in "query" check to see if the NIIN is in "objViewDDRT", and if it is get the AvailBalance for that NIIN from objViewDDRT.
I didnt use bound field here.as it is simple grid view with auto generate columns. I want to make some columns Editable while some should not be editable
I am trying to generate a Grid view from database, in one of my database columns the values are 'y' and 'N'. and i need to show this values in a check box .I tried to keep a check box in item template and tried to bind it, but could get much success.
I am working on asp.net mvc using linq to sql. I have to login my application only if the user registered (in register view page).I need to know how to compare the entered login and password values with registered values