Data Controls :: How To Read Hexadecimal Data From USB Port In C#

Nov 22, 2015

We are developing a project based on ModBus. now we stuck with the problem how to read the hexa-decimal value from Universal Serial Bus Port.

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DataSource Controls :: How To Port The Data Of SQL Server Table To Excel File

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How to port the data of a SQL Server table to a excel file?

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DataSource Controls :: Visual Studio 2008 Data Connection Port Number?

Apr 7, 2010

How do I specify a port number for a Data Connection in the Server Explorer of Visual Studio 2008. It would use 1433 as a default but the administrators changed it for security purposes.

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Forms Data Controls :: Showing Read-only Data With Editable Data In FormView

Jan 4, 2010

I am displaying selectable rows in a gridview. The selected row uses a stored procedure to display all the fields in a formview when the Select button is clicked.

Only a small subset of the fields in the selected row are editable. When I click the Edit button only the EditItemTemplate fields show up, the read-only fields from the ItemTemplate disappear. I want the read-only rows to remain visible with the editable rows.

If I include the read-only fields in the EditItemTemplate, I get an error when I click Update on the FormView. The error states that there are too many parameters being passed to the stored procedure to update fields. How can I continue to show the read-only fields with the editable fields on the FormView and avoid getting the input parameter error on the stored procedure for the Update command?

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Forms Data Controls :: How To Read Text File Data To Data Grid

Jul 7, 2010

i am having my text file data as follows

101011111111101111111111007060540A0941

I would like read this data and place it to the Corresponding cell in data grid.

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C# - How To Control A COM Port Parallel Port From Web Application

Jan 16, 2011

i can control a LPT port or COM port or any other hardware of server using ASP.Net with C#. I haven't found any clue in the internet.

I want to control a COM port Parallel port from web application.

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HttpHandlers / Modules :: Acessing Data Through Port?

May 7, 2010

I am supposed to extract the data which will be pushed through a dedicated port to the given Static IP address of a system / Server. The service that pushes the data is NOT a web service. This service supports SMTP, HTTP GET, HTTP POST, UDP and TCP protocols and the data format is XML. How can this data be accessed using dotnet platform??? Please provide any pointers on the same.

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Forms Data Controls :: Unable To Read Data From Excel File To Gridview?

Mar 4, 2010

I am reading data from Excel file using oledbdataadapter and binding to gridview.Every thing working fine.but if the cell is having some text along with bar sysmol ( | ) [Ex : 12345 | 789123] that cell data is not reading from excel file.All fileds in excel sheet is text format only.Some times it's reading correctly & some times it not reading(empty).Is there any problem with bar symbol ( | )

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Forms Data Controls :: How To Read A .txt File And Bind Data To ASP.NET Gridview At Run Time

Dec 10, 2010

Mr requirement is i am uploading a .txt file and read that .txt file and bind that data to ASP.NET Gridview control. My .txt file is look like below:

% Compressor type: GT12 C224(38) 55 Trim 0.38 A/R
% Turbine type: GT12 T202(35.5) 72 Trim 0.39 A/R
% Initial data file name:20050669-02.cdt
% Polar inertia: [kg.m2]
% Comment:DATA REDUCTION CODE REV 2.04 RELEASE 03-OCT-2004 (REFERENCE: REPORT 99-0145. REPORT 03-0901. TI-056)
% P reference: 100000Pa - T reference: 298 K
% NC WC PRC ETAC
% RPM KG/S T-T ----
115030.5714 0.0170 1.3398 0.5698
115030.5714 0.0239 1.3209 0.6155
115030.5714 0.0291 1.3020 0.6282
115030.5714 0.0339 1.2822 0.6377
115030.5714 0.0380 1.2576 0.6209
115030.5714 0.0416 1.2311 0.5955
134956.4286 0.0405 1.4045 0.6852

How to read this file and bind data to gridview control.

Right now i am using the following code but it stores whole data in a single column and a single row but i need it in four columns named NC, WC, PRC,ETAC and it's values in respected columns.

Code:

protected void Button1_Click(object sender, EventArgs e)

{
String ext = System.IO.Path.GetExtension(FileUpload1.FileName).ToUpper();
if (ext == ".TXT")
{
String content = System.Text.Encoding.ASCII.GetString(FileUpload1.FileBytes);
String[] ar = content.Split(';');
GridView1.DataSource = ar;
GridView1.DataBind();
}
}

how to get data in four columns in Gridview as a tabular format. I am using technologies Visual Studio 2005, ASP.NET 2.0,C#.NET 2.0 and Windows Xp Operating system.

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Forms Data Controls :: How To Read Rows Data In Gridviews Row Command Event

Dec 8, 2010

how can we read all rows data in rowcommand event of gridview?

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Forms Data Controls :: Read SQL Filestream Image Data Into Imagefield Within Detailsview?

Jun 16, 2010

I have a database containing a table with about 700,000 images so I recently enabled Filestream. However, I can't figure out how to render the images.

I have an Imagefield control within a Detailsview which is using an .aspx file to render the image through the DataImageUrlFormatString (which is typical). In my select statements I tried changing the binary field containing the image from objectdata to objectdata.PathName() per the Microsoft documentation but this does not work. I get the red X image box.

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DataSource Controls :: Read Data From An Access Data File And Input Into The SQL Database?

Mar 10, 2010

I have a lot of members data to enter into the ASPNETDB database. How can I read this data from an Access data file and input into the SQL database. All data is for user Names and Password,

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Data Controls :: Read Data From Excel File - Encrypt And Save In Database

May 7, 2015

I have an excel file with data as follows

ID     Name     Contact No    Address  
1      ABC        XXXXXXX     ABCNM2    
 XYZ         xxxxxxx       ASDFG

Now my requirement is read data from this excel sheet and den encrypt Contact No field for each row and den save data in database, how should it will be done I have to use some ready made available encryption algo for that. 

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Data Controls :: Server Error - Invalid Attempt To Read When No Data Is Present

May 7, 2015

This is the problem:

Server Error in '/AviaBellaVidaChecklist' Application.

Invalid attempt to read when no data is present.
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.InvalidOperationException: Invalid attempt to read when no data is present.

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Forms Data Controls :: How To Read ListView Data Into Generic List

Aug 19, 2010

I have a ListView which is filled by generic list of type MyClass. I can easily bind data from this list into ListView. But I have problems with reading data in opposite direction. This is my class:

[Code]....

I have also generic list of type MyClass:

[Code]....

Finally I bind data to ListView this way:

[Code]....

My ListView template:

[Code]....

How can I read data from ListView into my List list?

The operation of reading ListView data into List generic list should begin after clicking the button "GetData".

I saw the following advice:

[Code]....

but it does not work - the DataItem property of each Item of ListView has null value. The point is that I have generic list with data. I am binding this data into ListView which can be edited by user. After that after click Save or GetData data from ListView is read into generic list of MyClass type.

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Forms Data Controls :: Read A Data Table And Write In Access DB?

Nov 8, 2010

I need to read a table from a dtgrid there is one code for example?

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Forms Data Controls :: Invalid Attempt To Read When No Data Is Present?

Dec 5, 2010

here, i want to read the data for sql table, but there has error occur. "Invalid attempt to read when no data is present."

protected void DropDownListSelectDateYYYY_SelectedIndexChanged(object sender, EventArgs e)
{
Session["selectDate"] = Session["month"].ToString() + '/' + Session["day"].ToString() + '/' + DropDownListSelectDateYYYY.SelectedValue.ToString();
System.Diagnostics.Debug.Print(Session["selectDate"].ToString());
}

string sqlstr = "select * from ATTENDANCE where staff_Name = '" + LabelEmpSelected.Text.Trim() + "'and attendance_Date = '" + Session["selectDate"] + "' ";

whic session["selectDate"] cann't match to the database column data which is mm/dd/yyyy

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Data Controls :: MySqlDataReader - Invalid Attempt To Read When No Data Is Present

May 7, 2015

I want to get the total data of my table and store into one variableThis is my code...but it gives me error like 'Invalid attempt to read when no data is present.'

try {
GetConnection();
MySqlCommand.CommandText = "Select COUNT(source) from [dbo].[Company_info] where source = '"+source+"'";
MySqlDataReader = MySqlCommand.ExecuteReader();
if(MySqlDataReader.HasRows==true) {
string sourcecount = MySqlDataReader[0].ToString();
MessageBox.Show("Data Inserted..!! : "+sourcecount);
}
}
catch {
}

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Data Controls :: Read Data From Dynamic Table Inside GridView On Button Click

May 7, 2015

How to read values of asp: table in grid view after binding.

I want to get values one by one in label in for loop and read values of table row one by one. 

Like if i put check box in gridview and the row which is selected , i want to read value that asp:table in gridview.

How I bind grid, code attached.

Private Sub gvTransactionsBind(ByVal qry As String)
Dim adp As New SqlDataAdapter(qry, ConString)
adp.SelectCommand.CommandType = CommandType.Text
Dim ds As New DataSet
adp.Fill(ds)
gvTransactions.DataSource = ds

[Code] ....

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Forms Data Controls :: How To Read Data From Stored Proceedure And Display To Gridview Using Object Datasource

Dec 8, 2010

I have an object datasource which is using Business object as a myconnection

The method i have defined under myconnection is

Publicstatic
DataTable getfn(String dtype,
String did,
String dprefix,
String dname)
{
datable table = new datatable(); then declared stored proceedure and defined parameters and assighned values

In the stored proceedure it has a query like select column1,coloumn2,coloumn3 As Call from table where
I need to take data from Call and display it to the gridview through object datasource .

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Forms Data Controls :: Read Data From A Grid View?

Jul 16, 2010

I want to read the data from the grid view(Default1.aspx) for a particular row. How do I achieve this?

After that I want to redirect to another page(Default2.aspx) and display the data for that row in different controls of another page(Default2.aspx). how do I achieve this?

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Forms Data Controls :: Read Data From Datagrid View?

May 7, 2010

i have loaded a datagrid with some data from access database using sql query. i have to read the data loaded in datagrid view the syntax to read data cell by cell usiing vb code.

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Data Controls :: C# Utility To Read Exif Image Data

May 7, 2015

How to get these all details from an image in asp.net ?

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Reading Data From Client Computer Serial Port Using Web Application?

Jan 2, 2010

Is it possible to read data from serial port of client system using asp.net web site. Here is my scenario

I will be having computers connected in LAN and a web application which resides on server. Each client computer will be connected to a external machine using serial port and is ready for reading data, external machine measures equipment details and sends through serial port.Now I need to read the same data using my web page, is it possible?

Like when we do video chatting our web page reads data from web cam and sends the stream to web page. this way how can I read data from client machine to web page.

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Visual Studio :: Serial Port With Portable Data Terminal?

Aug 30, 2010

I am making application with portable data terminal which connected to serial port. User will go with portable data terminal and scan data with it than we will connect it to PC and read all the data from it.

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