I would like to know your libraries recommendations to read and write Excel applications on ASP .NET website. I have tried GemBox and NPOI, because they don't required Excel to be installed on the server, but they have some limitations on handling Excel files that are marked to read only.
View 6 RepliesI want to read write excel file in my application without installing the office on my server. Means my server don't have any excel (MS office) installation. Is it necessory to install the office on server to excute the program of read or write the excel file.
View 5 RepliesI want to read and write excel file . it can do with oledb , there is a limitation maximunm characters < 255 solution is mono data type , now create table become second sheet (when open excel it is shown as hidden.)
View 2 Repliesusing below code im reading excel sheet data by specifying the sheet name as [Project1$] but, how do i call the excel sheet without specifying the sheet name so, that it will ready any files.
string strFileName = FileUpload1.PostedFile.FileName;
string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strFileName + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection objConn = new OleDbConnection(connectionString);
objConn.Open();
String strConString = "SELECT * FROM [Project1$]";
I have a problem that I have been trying to solve the past two days, but I cannot figure it out...I have a folder which will have 60-70 Excel Files or CSV Files (they are right now). There are no headers in them, but they all have the same # of columns and the columns are in the same order in each fileI need to read each file in the folder, grab the data from the file and put it in a Database file. So all files will be read and then the data from them I guess put in a DataSet and then put into a Database (SQL).
View 3 Repliesi have been searching a lot but i didn't find my specefic result, my question is: how can i read excel sheet from asp.net using vb and how can i insert values into a worksheet from my web page
View 4 Repliesi want to ask whether we can read and write excel in website by using asp.net i don't want user to download the excel file and after edit upload again to website. what i want is user can read the excel file in website, after they edit, save the excel
View 4 RepliesI want to read and write a txt file but
The process cannot access the file 'D:BelgelerimVisual Studio 2005WebSitesmacrotechCounter.txt' because it is being used by another process.
what is wrong with this
StreamWriter FileWriter;
StreamReader FileReader;
string Countstr;
string str1;
int Len1,i;
FileReader = File.OpenText(Server.MapPath(Page.ResolveUrl("~/Counter.txt")));
FileReader = File.OpenText(Server.MapPath("~/Counter.txt"));
Countstr = FileReader.ReadLine();
FileReader.Close();
FileReader.Dispose();
i = Convert.ToInt32(Countstr) + 1;
Countstr = Convert.ToString(i);
FileWriter = File.CreateText(Server.MapPath("~/Counter.txt"));
FileWriter.WriteLine(Countstr);
FileWriter.Close();
Usually I use this code to read a file from beginning to end into a List<> and then I write to a file with the code I have above.It seems that StreamReader/StreamWriter is not possible to use in Global.asax.I simply might wonder how I can convert this code for Global.asax?
[Code]....
I have created an excel sheet from datatable using function. I want to read the excel sheet programatically using the below connectionstring. This string works fine for all other excel sheets but not for the one i created using the function. I guess it is because of excel version problem.
OleDbConnection conn= new OleDbConnection("Data Source='" + path +"';provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;";);
which i can create an excel sheet such that it is readable again using above query. I cannot use Microsoft InterOp library as it is not supported by my host. I have even changed different encoding formats. Still it doesnt work
[code]....
how to write data in and excel sheet. when i retrive the data by foreach loop i want to dynamicaly create a excel sheet and save data inside the sheet.
View 3 RepliesI'm trying to add functionality to a simple web service that will allow me to log information to an XML file on the hard drive where the application is located. When I employ the functionality in a Console version of the application, the data gets logged to:binx86Debug MySolution.MyProjectMessageLogTestMessagess.xml. However, when I try to write read from or write to the XML file in the ASP.NET application, I get a System.UnauthorizedAccessException with the message: Accees to the path 'MessageLog' is denied.I would like the log file to appear in the in folder of the application directory, so what settings in IIS or on the server itself would I need to change to allow my application to read from and write to that folder?
View 3 RepliesIn asp.net mvc project I am using MYSQlMemberShipProvider. Now I want that instead of reading the connection string from web.config file, it will read the connection string from external file every time. So that I am implementing the cutsom mebership provider class, this class inherits the MemberShipProvider class. But the problem is that if I inherits the MemberShipProvider class then I have to impelment all of its method in my cutsom membership provider class, But I want to use all other inbuilt methods of MemeberShip. What can i do. I only want to add the code like below:
public class CustomSqlMembershipProvider :MembershipProvider
{
public override void Initialize(string name, NameValueCollection configs)
{
base.Initialize(name, configs);
Connectionstring objProducts = // redaing the connection string.
}
}
But on compiltaion it is giving me the error does not implement inherit abstract member.
I a now Porting a data from Uploaded Excel File to database. In that, I need to check "Sheet name" Of that Excel file Whether it is Sheet1 or Sheet2 or something else...
how to Check/Read Excel Sheet name at runtime..
i can't read picture from file excel in code asp.net
View 2 RepliesI have a web app where user uploads a file.ile is saved in server locally and I want to read some data from it.Currently my development server has office 2003.So do I need office 2007 in order to be able to read an excel from office 2007 ?
Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook wrkBook; // = new Microsoft.Office.Interop.Excel.Workbook();
I need to set folder permission programmaticcaly which is in my GoDaddy server. I have nearly 150 folders in my server so I cant change through server settings or IIS settings. I am using web application. My folder may go on increase in future.I have googled a lot of things.
1. Like Access Control List in System.SEcurity namespace
2.System.principl.security...
I cant able to change the file permission but not a directory.
I must allow all the users to write or move a file to the folder which is in read only mode. That should be done programmatically and should be dynamic.
I have developed an application where I need to create a page to read data from Excel File and then update it to the database. The code that I wrote works only when the application runs from my machine. When I deployed the application to the server it gave an error- 'C:PRFileIimport_File.xls' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides. here is mu code -
protected void InsertData(object sender, EventArgs e)
{
OleDbConnection oConn = new OleDbConnection
(@"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\PuertoRicoFile\Puertorico_Iimport_File.xls ; Extended Properties=Excel 8.0 ");
OleDbCommand oCmd = new OleDbCommand("select * from [Puertorico_Data$]", oConn);
oConn.Open(); //Here [Puertorico_Data$] is the name of the sheet in the Excel file where the data is present
OleDbDataReader oleDbReader = oCmd.ExecuteReader();
string AgentIP = "";
string TagName = "";
string Status = "";
string Severity = "";
int EventCount = 0;
string EarliestEvent = "";
string LatestEvent = "";
while (oleDbReader.Read())
{
AgentIP = (string)oleDbReader[0]; // valid(oleDbReader, 0);//Here we are calling the valid method
TagName = (string)oleDbReader[1]; //valid(oleDbReader, 1);
Status = (string)oleDbReader[2]; //valid(oleDbReader, 2);
Severity = (string)oleDbReader[3]; //valid(oleDbReader, 3);
EventCount = Convert.ToInt32(oleDbReader[4]); //oleDbReader[0]; //valid(oleDbReader, 4);
EarliestEvent = (string)oleDbReader[8]; //validate(oleDbReader, 8);
EarliestEvent = EarliestEvent.Substring(0, 19);
LatestEvent = (string)oleDbReader[9]; //validate(oleDbReader, 9);
LatestEvent = EarliestEvent.Substring(0, 19);
InsertDataIntoSql(AgentIP, TagName, Status, Severity, EventCount, EarliestEvent, LatestEvent);
}
SqlConnection mySQLconnection = new SqlConnection(ConfigurationManager.ConnectionStrings["IssNetworkReportingSystemConnString"].ConnectionString);
mySQLconnection.Open();
SqlCommand cmdSql = new SqlCommand("AddMonth_Event_TotalInfo_for_Puertorico", mySQLconnection);
cmdSql.CommandType = CommandType.StoredProcedure;
dbReader = cmdSql.ExecuteReader();
dbReader.Close();
cmdSql = new SqlCommand("AddQtr_Event_TotalInfo_for_Puertorico", mySQLconnection);
cmdSql.CommandType = CommandType.StoredProcedure;
dbReader = cmdSql.ExecuteReader();
dbReader.Close();
oConn.Close();
lblMsg.Text = "Data Imported Sucessfully";
lblMsg.ForeColor = System.Drawing.Color.Green;
}
public void InsertDataIntoSql(string agentIP, string tagName,
string Stat,string severity,int eventCount, string eEvent, string lEvent)
{//inserting data into the Sql Server
SqlConnection mySQLconnection = new SqlConnection(ConfigurationManager.ConnectionStrings["IssNetworkReportingSystemConnString"].ConnectionString);
mySQLconnection.Open();
SqlCommand sqlSelect = new SqlCommand("SELECT SeverityID from Severity where SeverityDesc=@SeverityDesc",mySQLconnection);
sqlSelect.CommandType = CommandType.Text;
sqlSelect.Parameters.Add("@SeverityDesc", SqlDbType.NVarChar).Value = severity;
dbReader = sqlSelect.ExecuteReader();
int severityId = Convert.ToInt32(dbReader.Read());
dbReader.Close();
SqlCommand sqlInsert = new SqlCommand("Insert into IdsData_Puertorico(AgentIP,TagName,Status,SeverityID,EventCount,EarliestEvent,LatestEvent)" +
" values (@AgentIP,@TagName,@Status,@SeverityID,@EventCount,@EarliestEvent,@LatestEvent )" ,mySQLconnection);
sqlInsert.CommandTimeout = 0; //timeout unlimited
sqlInsert.CommandType = CommandType.Text;
sqlInsert.Parameters.Add("@AgentIP", SqlDbType.NVarChar).Value = agentIP;
sqlInsert.Parameters.Add("@TagName", SqlDbType.NVarChar).Value = tagName;
sqlInsert.Parameters.Add("@Status", SqlDbType.NVarChar).Value = Stat;
sqlInsert.Parameters.Add("@SeverityID", SqlDbType.Int).Value = Convert.ToInt32(severityId);
sqlInsert.Parameters.Add("@EventCount", SqlDbType.Int).Value = Convert.ToInt32(eventCount);
sqlInsert.Parameters.Add("@EarliestEvent", SqlDbType.DateTime).Value = DateTime.Parse(eEvent);
sqlInsert.Parameters.Add("@LatestEvent", SqlDbType.DateTime).Value = DateTime.Parse(lEvent);
sqlInsert.CommandType = CommandType.Text;
sqlInsert.ExecuteNonQuery();
mySQLconnection.Close();
}
Iām trying to read images from an excel file using OleDbDataReader. My excel file has 6 columns of data, the first 5 are all text but the last is image. While Iām reading the record, It's doing fine on the first 5 columns but return me with a for the sixth column.
Here is my demonistration code:
[code]....
I create web service for Reading and writing the registry. It works fine in win-xp. But its not working when I published it in win-2008 server. It shows me http 500 error.
My Code is:
set Reg:
string key = @"SOFTWAREWow6432NodeMyCompanyMyProjectSettings";
string valuename = "Allow";
setRegistryValue(key, valuename, Value);
Get Reg:
string key = @"SOFTWAREWow6432NodeMyCompanyMyProjectSettings";
string valuename = "Allow";
return Convert.ToInt32(getRegistryValue(key, valuename));
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
I need to browse excel file and update the neccessary tables based on some ID. It is basically updating employees in bulk.
View 7 RepliesI need to upload an excel file using a web application. Then I need t oread it in memory without saving it on the server.
Does the file need to have headers? Also the data is such that it may have or may not have values for some columns.
I have an Excel file called Products.xls .I have Columns A and B, with the titles NAME and QUANTITY.The name of the sheet is SHEET1.The file has about 40 lines.How do i show these data on a Gridview or Listview ?
View 4 Repliesi dont know iam placing my query correct place or not but i need ur's help, Iam Reading and storing one single excel file Successfully But
tring Path = @"E:checkinkkk.xls";