how to find the data in a particular cell of a datatable using a reference value of another cell of same row
i've got two columns in a datatable andi want to retrieve a value from one of the row (say from column 2), with reference to the data present on Column 1.
My gridview has a dropdownlist when the user clicks "Edit". my question is: How to I retrieve the value of the cell that contains a dropdownlist (when the user clicks on "Select")?
I am able to retrieve the information from the cell that has a textbox (textbox is displayed ONLY when the user clicks on Edit). But when I try to retrieve information from any cells that has a dropdownlist (dropdownlist is displayed ONLY when the user clicks on Edit), it comes up blank.
In order to retrieve the cell I have used the following below:
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I am reading a datareader, populating a datatable and then when finished populating I bind to a gridview. Right now, I am placing a literal in the cell of the rows based upon date differences....sort of a textual gant chart. What I want to be able to do is change the background color of the cell I am putting these literals in. I am including the code below where I am populating the cells with the text. Does anyone know how to make the background color change? I know that in a normal gridview on datarowbind I can change it but I don't know how to do this on a cell by cell basis within the code I have below.
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I have a gridview which is bounded with a Datatable. I have a button column in the gridview and on its click I am updating other row data and color. Data is been retained and color of the cell.
But when I am clicking other rows button, that particular rows color is retained but remaining color is again reverted to default. How can I rectify this.
How to allow null value on my program?
for below statement, "WARNING_TYPE" IS NULL..
but when I run, it promp me error..what are the correct statement should i write. tq all
l_Connection.ConnectionString = constr
l_Command.Connection = l_Connection
l_Command.CommandType = CommandType.Text
l_Command.CommandText = " SELECT UNP.EMPLOYEE_ID, UNP.UNPAID_DAYS, ABST.ABSENT_DAYS, WARN.WARNING_TYPE " +
[code].....
I have created a WCF Service which is returning a DataTable. It is successfully build and hosted in IIS7 and also working fine when i am returning a string only. but it gives me error (below) when i am returning a DataTable.
"The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error."
This is how i am calling my WCF Service.
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I have a grid view populated with some data included bit fields and I made an export to excel function For each row i need to check the cell with the bit value to change the cell color, but the cell is always empty, even if is the field is set to False or True. foreach (GridViewRow row in gv.Rows)
View 2 RepliesI'm having a weird problem where the GridView cell that I'm programmatically updating turns grey, and throws a null error when attempting to save row. I have been searching all day and have not been able to find a solution. I'm guessing there is a problem with my code, so here it is:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
How to set Height and ItemSource(Business Object as DataSource for Cell) for every Cell in DataGrid/ Grid? Shown below is part of code I am currently using with Grid Control. What I am currently doing is that I am using ListBoxItem, set Item Height and ItemSource at ListBoxItem Level, Add ListBoxitem to ListBox and then Add ListBox to Grid, It leaves me with just one row and multiple columns in the Grid, which is perhaps not the best way of doing it as it doesn't allow me to take benefits from UI Virtualization of Grid.
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I am open to use any control i.e. Grid/ DataGrid provided it allows me to set Cell Height and item source at Cell level. In my requirement, Cell height depends on the Item duration and size of image, which means the height of the cells may not be same across cells in any particular row.
I am trying to retrieve the contents for one cell from my database table from codebehind, but It keeps returning NULL with this error
System.NullReferenceException: Object reference not set to an instance of an object.
It errors out at this line: dt = dv.ToTable();
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If I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?
View 1 Repliesi have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
View 2 Repliesim trying to copying specific record from one datatable to another datatable i used below code
public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex)
{
System.Data.DataTable dtn = dtg.Clone();
for (int i =startindex; i < count; i++)
[Code]....
its taking too long time in cloneing is there any better way to do this task which is Time effecent
'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesWhat I'm trying to do is similar to the following within the gridview RowDataBound event, only with a detailsview:
DataBinder.Eval(e.Row.DataItem, "TotalPayment")
I created a DataBound event for the detailsview, and it doesnt recognize e.row. I've looked at some reference materials which tell me to use DataBinder.Eval(Container.DataItem, "TotalPayment") but then it doesnt recognize container.
I am retrieving data from a web serivce and storing the data into a dataset.
I'm then populating a gridview with the data from the dataset.
Before each row of data is displayed on the website, I need to check and make sure the user has proper permissions to view that data.
Can this be done with a gridview(or any other .NET data control)?
Or would I need to loop through the data manually, and then write each row out manually?
i have web application it should create single HTML page . that one HTML page should send to the customers.how to create HTML page .i created one page but it retriveing single record from the databse values . my problem is i have to pull all the records from the database and papulate the HTML page. but i am getting only onerecord on that page.my code as follows
string type = ds.Tables[0].Rows[i].ItemArray[4].ToString();
string WAIVN = ds.Tables[0].Rows[i].ItemArray[0].ToString();
string status = "cdcr";
[code]....
but iam not getting all records only single record only iam retriving
I have a search option which a person can use a multi select listbox. I have it coded so it would loop through to see if its selected or not. I also have a stored procedure where the sql statement is coded for the select statement. For some reason, its not populating my gridview. Where am I doing wrong? Below is the code and stored procedure.
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[Code]....
I have a page with a series of Gridviews to display summarised information. There a three Gridviews which need to be selected as criteria and then a Go Button is clicked to retrieve the info.
At the moment the information is retreived as the dropdowns are selected. Can this be stopped until the user clicks GO?
I am somewhat new at C# so forgive me if I have something listed wrong. This is what I got:
I am working on a school project designing a car dealership website. I have an inventory list that allows you to edit any car in the inventory. When you click on the edit button it takes you to the edit page and populates the controls with selections from the database. I have an options table that stores the VehicleID and Option ID. When the page loads it fills all the DropDownLists for the vehicle info with the data and selects the correct item according to the database selection but the CheckBoxList does not select the items that are on the Options table. I checked the query in SSMS and it returns the correct data. I have stepped through the method and it works till the "(currentCheckBox != null) if statement. It doesn't throw any errors but it also doesn't select items when the page renders.
I thought it might have been something with the page life cycle since databound controls don't render until the end but the DropDown's I have fill and selects the correct item according to the database.
I've created a data bound gridview to a SQL database. I am retrieving the data with a simple select for a specific date, and then populating my gridview. The one caveat is that I have added a second header row to my gridview, and then I am hiding parts of another row that was retrieved to only populate the main header row. I believe that this is causing my issue. However, when I step through the code it appears that my ids are proper (the first row has an id of 0, etc....). However, when I check the checkbox in row 4, the actual data from row 3 is being pulled out of the gridview.
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Tried this but it doesn't work.
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Retrieving datakey value in gridview?
I am using the detailsview to build an insert with username and password field but the password field doesn't have the password mode. So I used the insert template field option on the detailsview control and place a textbox within the InsertItem template but I could not get it to work. The error "Could not find control 'txtPassword' in ControlParameter 'Password'.
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I have been able to save an image in the database but i can not preview it
View 4 Repliesthis item colum called Id.
rowItem.Cells[0].FindControl("Label1").ToString();
it insert my to the db this value:
System.Web.UI.WebControls.DataControlFieldCell
how can i get it value right? i mean to get the item,because in this cell i want to get the item of it.