how can i convert the column data in datatable to integer array the column data in datatable stored as:
1
2
3
4
after store to integer array,how can i get the max value in array
In my aspx page I have a HTML inputfile type which allows user to browse for a spreadsheet.Once the user choses the file to upload I want to read the content of the spreadsheet and store the content into mysql database table. I am using the following code to read the content of the uploaded file and convert it into a datatable in order into insert it into database table.
if (filMyFile.PostedFile != null)
{
// Get a reference to PostedFile object
HttpPostedFile myFile = filMyFile.PostedFile;
// Get size of uploaded file
int nFileLen = myFile.ContentLength;
// make sure the size of the file is > 0
if (nFileLen > 0)
{
// Allocate a buffer for reading of the file
byte[] myData = new byte[nFileLen];
// Read uploaded file from the Stream
myFile.InputStream.Read(myData, 0, nFileLen);...................................
I have a datatable that I need to convert into a javascript array. This will allow me to do client-side validations on my webpage.
My datatable has 6 columns. X rows depending of the query results.
I was looking to use Me.ClientScript.RegisterArrayDeclaration but I just can't find how to build my 2-dimentional array to feed to this declaration.
On google I found some exemple for a 1-dimensional array, but nothing for 2-dimentional and I am not good enough in Jscript to figure it out myself.
I want to convert an datarow array into datatable.. Wat is the simple way to do this?
View 3 Repliesusing vb.net 2005.
I'm trying to a byte array column to a table but getting an exception:
<error>
datatype argument cannot be null
</error>
The code I have is:
[Code]....
Does anyone know the correct syntax for this?
Every morning we send out an email with a text file attached. This is a manual process so I am automating it.I am using an internal mail web service. Its last two parameters are a byte array which is the file contents and a string which is the file name. I passed (...gbytes, "test.txt") and the only thing wrong with it is text.txt is XML. I want it to be text (csv is fine because there is actually four columns that come from a datatable).So I am assuming what's making it XML is this code:
Code:
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Runtime.Serialization.IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
formatter.Serialize(stream, ds.Tables[0]);
gbytes = stream.GetBuffer();
I am trying to search the Internet for how to convert a datatable to a byte array, but I can't find how to have it be text instead of XML. Also, another parameter our WS takes is a flag to say if it's XML, and I am setting this to false.
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 following code reading in my xml file and sorting it by ID:
Dim ds As New DataSet
ds.ReadXml(Server.MapPath("/posts.xml"))
Dim dv As New DataView(ds.Tables(0))
dv.Sort = "id desc"
The only problem is that it isn't sorting it numerically (it's sorting it alphabetically 1, 10, 11, 2, 24, 3, 4...). It appears as though I have to convert that column into integers, but I haven't been able to figure out an efficient way to do that.
im ds As New DataSet
ds.ReadXml(Server.MapPath("/App_Data/posts.xml"))
'ds.Tables(0).Columns(0).DataType = TypeOf(Decimal)
Dim dv As New DataView(ds.Tables(0))
'dv.Sort = "date"
How do I sort a data table based on a particular column which has integer values in ascending order?
I wrote this:
'Sort the datatable based on sequence id leadtable.DefaultView.Sort ="Id" But it doesnt seem to work Datatble is defined as:
[Code]....
I have a datalist in which i want to do away with -- change to data recieved into an array list.
Goal: This is a working code. Instead of setting the datasource (TABLE) for the DataList -- I want to set the data table to an array list
Dim xUserAccess As New User()
xUserAccess.UserAccess(txtEmployeeID.Text)
If xUserAccess.errorFlag Then
lblErrorMsg.Text = xUserAccess.ErrorMessage
Else
DDLUserAccess.DataSource = xUserAccess.UserData
-- Change to an array list
DDLUserAccess.DataBind()
End if
i add data in datatable...img1 and img2..
i try to call the image by using array but its read two img in one time...so its img1 only appear..
how to make it read both of img?
i need to convert from string to integer, i tried in all ways but no luck.... here is my code
[Code]....
here in checkdDoorID integer value is available, but i can't convert to string. i tried ctype,parse but nothing worked out. i need the value in integer so that i can stored in DB as primary key.
I need to convert a timespan into an integer. I have two dates that I am subtracting one from the other, returning a value in days. I then need to perform some arithmatical functions on that value but I cant figure out how.
View 5 Replies protected void Page_Load(object sender, EventArgs e)
{
string imageUrl = Request.QueryString["img"];
int imageHeight = Request.QueryString["h"];
int imageWidth = Request.QueryString["w"];
[code]...
when i run it this error occur...An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0029: Cannot implicitly convert type 'string' to 'int'Source Error:
Line 21: string imageUrl = Request.QueryString["img"];
Line 22:
Line 23: int imageHeight = Request.QueryString["h"]; Line 24: int imageWidth = Request.QueryString["w"];
Line 25:
i think i should convert strin to int but i dont know how i can do it.
I want to convert Label text into Integer datatype. I tried by giving Convert.Int32(Label1.Text) and int.Parse(Label1.Text) but I couldn't do Type casting . I am getting error at runtime. I searched in web I couldn't get the solution.
View 1 RepliesCan we convert the Repeater items back to a datasource?
At post back, I want to convert the repeater items into a datatable which is a datasource was given to the repeater.
I am doing GridView Sorting without ObjectDataSource. For this requirement I need to convert DataTable to DataView, I know I can do that in VS 2008 but How can I do this in VS 2005.
View 20 RepliesI have one gridview and i want to take all the values in a datatable or dataview.
I tried like this
DataTable gridTable = (DataTable) dataGrid1.DataSource;
but gridTable is showing null, it should not show null because gridview has lot of records with 3 columns
Is there any way i can convert/store a gridview.Datasource records in a datatable or dataview?
i have an string data array which contains data like this
5~kiran
2~ram
1~arun
6~rohan
now a method returns an value like string [] data public string [] names()
{
return data.Toarray()
}
public class Person
{
public string Name { get; set; }
public int Age { get; set; }
)
List<Person> persons = new List<Person>();
string [] names =names();
now i need to copy all the data from an string array to an list<person> and finally bind to grid view
gridview.datasource= persons
how can i do it?
I want to retrieve and store(in an array) all the row values of a particular column in a gridview..i.e,if I have gridview with columns col1,col2 and col3, I want to retrieve rows of col1 by specifying col1..And,store all the rows in an array
View 4 Repliesi'm trying to sort a datatable using the typical select method*. The problem comes because the field is string defined but it's containing integer values.
With sql the problem will be solved just using something like:
select * from table order by to_number(field);
but of course it's not working properly with the method commented above (select method).
*http://msdn.microsoft.com/en-gb/library/b5c0xc84(VS.80).aspx
I am having an issue with C# and separating current day, and month into integers. I tried the code in MSDN but it doesn't work.
[Code]....
Labels display nothing, but code shows no errors, and you can see I tried 2 different ways of doing it.
for below i dont want to use sql Query bcz data is not coming from sql/oracle database.
its comeing from propertary database and data is in datatable .
This is datat table format :
[code]....
Possible Duplicate: Convert.ToInt32() a string with Commas i have a value in the label as: 12,000 and i wish to convert it into an integer like 12000 (use it for comparison) i tried int k = convert.toint32("12,000"); this does not work.
View 5 Repliesto convert string value "5%" to integer...I try to use Val(),Convert.ToInt32().... I still got error
View 10 Replies
