Inserting some text to exact location of an existing text file - c#

I'm trying to insert Some text in exact location on existing file.
First method I've applied-
Which does not effect anything??
string newData;
string data = System.IO.File.ReadAllText("lal.txt");
int indx = data.IndexOf("1");
if (data.Contains("1"))
{
MessageBox.Show(indx.ToString());
newData=data.Insert(indx+1, "ooooooooooooooooooooooooo");
File.WriteAllText("lal.txt",data);
}
Another Method I'm using --This method completely erases all contents or creates no content ???
string newData;
string data = System.IO.File.ReadAllText("lal.txt");
int indx = data.IndexOf("1");
if (data.Contains("1"))
{
MessageBox.Show(indx.ToString());
newData=data.Insert(indx+1, "ooooooooooooooooooooooooo");
var f = new StreamWriter(File.Create("ll1.txt"));
f.Write(newData);
//data.Insert(indx, "OIasasas");
}

First snippet has error: changed string is in newData variable, but you wrote unchanged string to file.
2nd snippet has another error: you write proper string, but do not close file stream, so changes may not be made.
This should work
string data = System.IO.File.ReadAllText("lal.txt");
int indx = data.IndexOf("1");
if (indx != -1)
{
var newData = data.Insert(indx + 1, "ooooooooooooooooooooooooo");
File.WriteAllText("lal.txt", newData);
}

Related

How to copy data from HTML div in Selenium C#?

I want to copy alter table data from webpage div and paste it into a .txtfile, screenshot is attached below:
Below is the HTML for above screenshot:
Can i do this by storing this in a variable like below but how can i copy all data at once in a variable from div ?
string value = driver.FindElement(By.XPath("//td[#style='padding:0px;
white-space: nowrap;']")).Text;
Below is the code of my test case in which i am selecting a file to convert from a tool after conversion i want to store the alter table script in a separate .txt file for which i created a create function to create file :
public void TestMethod1()
{
try
{
string dir = #"D:\test\input"; //path
var directory = new DirectoryInfo(dir); //folder ko access
foreach (FileInfo file in directory.GetFiles()) //loop
IWebDriver driver = new ChromeDriver(); //driver object
driver.Navigate().GoToUrl("http:abcurl//convPLSQL.html");
//site url
driver.Manage().Window.Maximize(); //browser maximize
string param = dir.Replace("/", "\\"); // ye code file
param += "\\";
param += file.Name;
driver.FindElement(By.Id("fileuploader")).SendKeys(param);
driver.FindElement(By.Id("keyinput")).SendKeys("convUser001");//Key
driver.FindElement(By.Id("translatebutton")).Click();//Translate Button
driver.FindElement(By.LinkText("Download Results")).Click();//Download
// string data= driver.FindElement(By.XPath("//td[#style='padding:0px;
// white-space:nowrap;']")).Text;
create(); // call create function to create .txt file
}
public void create()
{
try
{
string fileName = #"D:\test\output\Mahesh.txt";
// Check if file already exists. If yes, delete it.
if (System.IO.File.Exists(fileName))
{
System.IO.File.Delete(fileName);
}
// Create a new file
using (FileStream fs = System.IO.File.Create(fileName))
{
// Add some text to file
Byte[] title = new UTF8Encoding(true).GetBytes("New Text File");
fs.Write(title, 0, title.Length);
byte[] author = new UTF8Encoding(true).GetBytes("Mahesh Chand");
fs.Write(author, 0, author.Length);
}
// Open the stream and read it back.
using (StreamReader sr = System.IO.File.OpenText(fileName))
{
string s = "";
while ((s = sr.ReadLine()) != null)
{
System.Console.WriteLine(s);
}
}
Get all child elements of div containing the spans having the needed text. Something like:
var spans = driver.FindElements(By.XPath("//td/div[2]/span"));
Then concatenate text from each span element. Replace special characters like "&nbsp" with space. Use string builder or add text to string generic collection and join later if the text is big.
Example:
var text = string.Empty;
foreach(var span in spans)
{
text += span.Text.Replace("&nbsp", " ");
}

How to access 'Resize Table' of 'Table Design' tab in excel with Open XML SDK in .NET C#

I'm trying to write to an existing excel template (.xlsx) and saving it as a new file using Open XML SDK in .NET C#. I have a requirement to change the table design and resize the table programmatically. I'm not able to access the 'Resize Table' property using Open XML.
Manually we can access it by going to 'Table Design' tab and then selecting ' Resize Table'. Please refer to the below screenshot
Any help is greatly appreciated. Thanks!
First Get Your table By name ( if just one table you can get the
first)
then Update the reference ( size of the table) and
save the workSheet.
the table size refrenace is just a string ex. A1:H5
you need to change the H5 to H15 to resize the table to add 10 rows more :)
Just Sample code
var tableDefinitionPart = worksheetPart.TableDefinitionParts.Where(table=>table.Table.DisplayName== "Your table name").FirstOrDefault();
// OR var tableDefinitionPart = worksheetPart.TableDefinitionParts.FirstOrDefault();
if (tableDefinitionPart != null)
{
UpdateTableDefinitionPart(tableDefinitionPart, newTotalRows);
}
workSheet.Save();
public void UpdateTableDefinitionPart(TableDefinitionPart tableDefinitionPart, uint rowsCount)
{
var tableSize = tableDefinitionPart.Table.Reference;
string newSize = tableSize.UpdateRowsTo(rowsCount);
tableDefinitionPart.Table.Reference = newSize;
tableDefinitionPart.Table.AutoFilter.Reference = newSize;
}
*************************************************************************************
public static string UpdateRowsTo(this StringValue tableReference, uint rows)
{
string result = tableReference.Value.Trim();
var parts = result.Split(':');
Regex regex = new Regex("[a-zA-Z]+");
Match match = regex.Match(parts[1]);
result = $"{parts[0]}:{match.Value}{rows}";
return result;
}
OR
***************************************************************************************
public static string UpdateRowsTo2(this StringValue tableReference, uint rows)
{
string result = tableReference.Value.Trim();
int index = result.Length - 1;
while (!string.IsNullOrWhiteSpace(result) && Char.IsDigit(result[--index]))
{
}
result = result.Substring(0, index + 1) + rows;
return result;
}

How to reference List<Data>

I am new to C# and I have taken a small task on. The StackOverflow entry for reading a text file and saving to a list is a great start for me. I need to read a text file and send the data to an SQL database.
How to Read This Text File and store in a list using C#
The Data in List<Data> list = new List<Data>(); just keeps staying in red.
How can I stop this please?
I am a PLC engineer and I'm trying to collate data that cannot be handled by PLC. I am just trying to read the file so that I can then show the data in a Grid, with a view to populating the SQL database later.
The text file is held on a remote Linux machine. The collator is a WIndows 10 panel. The SQL can reside on teh Windows panel or remotely.
static void Main(string[] args)
{
List<Data> list = new List<Data>();
var dd = File.ReadAllLines(#"C:\Users\XXXX\Desktop\test.txt")
.Skip(1)
.Where(s => s.Length > 1).ToList();
foreach (var item in dd)
{
var columns = item.Split('\t').Where(c => c.Trim() != string.Empty).ToList();
if (columns != null && columns.Count > 0)
{
int id;
if (int.TryParse(columns[0], out id))
{
list.Add(new Data()
{
id = Convert.ToInt32(columns[0]),
Name = columns[1],
Description = columns[2],
Quantity = Convert.ToInt32(columns[3]),
Rate = Convert.ToDouble(columns[4]),
Discount = Convert.ToInt32(columns[5]),
Amount = int.Parse(columns[6])
});
}
else
{
list.Last().Description += columns[0];
}
}
}
Console.ReadLine();
}
I just keep receiving red squiggly lines on <Data. within Visual Studio
I got the code to work and I read the DAT/text file straight into a DatagridView. I am now writing the Grid to SQL.
Many thanks, sorry for latency as I've been away on-site.
String sLine = "";
try
{
//Pass the file you selected with the OpenFileDialog control to
//the StreamReader Constructor.
System.IO.StreamReader FileStream = new System.IO.StreamReader(openFileDialog1.FileName);
//You must set the value to false when you are programatically adding rows to
//a DataGridView. If you need to allow the user to add rows, you
//can set the value back to true after you have populated the DataGridView
dataGridView1.AllowUserToAddRows = false;
// Clear the DataGridView prior to reading a new text file
dataGridView1.Rows.Clear();
dataGridView1.Columns.Clear();
//Read the first line of the text file
sLine = FileStream.ReadLine();
//The Split Command splits a string into an array, based on the delimiter you pass.
//I chose to use a semi-colon for the text delimiter.
//Any character can be used as a delimeter in the split command.
//string[] s = sLine.Split(';');
string[] s = sLine.Split('\t');
//In this example, I placed the field names in the first row.
//The for loop below is used to create the columns and use the text values in
//the first row for the column headings.
for (int i = 0; i <= s.Count() - 1; i++)
{
DataGridViewColumn colHold = new DataGridViewTextBoxColumn();
colHold.Name = "col" + System.Convert.ToString(i);
colHold.HeaderText = s[i].ToString();
dataGridView1.Columns.Add(colHold);
}
//Read the next line in the text file in order to pass it to the
//while loop below
sLine = FileStream.ReadLine();
//The while loop reads each line of text.
while (sLine != null)
{
//Adds a new row to the DataGridView for each line of text.
dataGridView1.Rows.Add();
//This for loop loops through the array in order to retrieve each
//line of text.
for (int i = 0; i <= s.Count() - 1; i++)
{
//Splits each line in the text file into a string array
//s = sLine.Split(';');
s = sLine.Split('\t');
//Sets the value of the cell to the value of the text retreived from the text file.
dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells[i].Value = s[i].ToString();
}
sLine = FileStream.ReadLine();
}
//Close the selected text file.
FileStream.Close();
}
catch (Exception err)
{
//Display any errors in a Message Box.
System.Windows.Forms.MessageBox.Show("Error "+ err.Message, "Program Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

How to store special characters in sql table?

I am trying to import value HACKÅS in my sql table(throu SSIS Package), but it's getting inserted as HACKÃ…S.
tried with changing datatype from varchar(max) to nvarchar(max). No Success.
Please suggest.
Below is my code block from SSIS script task..
public void Main()
{
//Declare new aplication
Application importTextFile_app = new Application();
//Create package
Package ImportTextFile_pkg = new Package();
//Get the File_Path from package variable
string File_Path;
File_Path = (string)Dts.Variables["$Package::File_Path"].Value;
//Get the delimiter value from package variable
string Delimiter = (string)Dts.Variables["$Package::Delimiter"].Value;
Delimiter = Delimiter.Replace("\\t", "\t");
char[] delimiters = new char[Delimiter.Length];
delimiters = Delimiter.ToCharArray();
//Get the Oledb destination connection string from package avriable
string Oledb_Connection_String;
Oledb_Connection_String = (string)Dts.Variables["$Package::Oledb_Connection_String"].Value;
//Set the destination table name
string Destination_Table_Name;
Destination_Table_Name = (string)Dts.Variables["$Package::Table_Name"].Value;
//Assign relevant package name and description - given table name for uniqueness to avoid conccurrency issues
ImportTextFile_pkg.Name = Destination_Table_Name;
ImportTextFile_pkg.Description = "Programmatically create an SSIS 2012 package that loads a Flat File Source into OLE DB Destination Using Script Task's C# language";
//Insert the Data Flow Task with appropriate name and some buffer space for processing of file
ImportTextFile_pkg.Executables.Add("STOCK:PipelineTask");
TaskHost taskHost = ImportTextFile_pkg.Executables[0] as TaskHost;
MainPipe dataFlowTask = (MainPipe)taskHost.InnerObject;
taskHost.Name = "Dynamic Data Flow Task";
taskHost.Properties["DefaultBufferMaxRows"].SetValue(taskHost, "1000000");
//Insert the Flat File connection
ConnectionManager connectionManagerFlatFile = ImportTextFile_pkg.Connections.Add("FLATFILE");
//You can change this path depending on where you have stored the flat file
connectionManagerFlatFile.ConnectionString = File_Path;
//Assign name to the flat file connection
connectionManagerFlatFile.Name = "TXT_FlatFile";
//Indicate that the flat file is delimited
connectionManagerFlatFile.Properties["Format"].SetValue(connectionManagerFlatFile, "Delimited");
//Indicate whether the source file has column headings or not - in this case, our sample data has column headings.
connectionManagerFlatFile.Properties["ColumnNamesInFirstDataRow"].SetValue(connectionManagerFlatFile, Convert.ToBoolean(true));
//Indicate that the flat file is text qualified
connectionManagerFlatFile.Properties["TextQualifier"].SetValue(connectionManagerFlatFile, "\"");
//Get native Flat File connection
RuntimeWrapper.IDTSConnectionManagerFlatFile100 connectionFlatFile = connectionManagerFlatFile.InnerObject as RuntimeWrapper.IDTSConnectionManagerFlatFile100;
string line;
//Prepare create table script according to columns in a file
string create_table_script;
Destination_Table_Name = "[" + Destination_Table_Name + "]";
create_table_script = "create table "+Destination_Table_Name+" ( ";
//Determine the number of columns by reading the sample Flat File - line by line.
using (StreamReader file = new StreamReader(File_Path))
{
try
{
while ((line = file.ReadLine()) != null)
{
//char[] delimiters = new char[] { '|' };
string[] parts = line.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < parts.Length; i++)
{
RuntimeWrapper.IDTSConnectionManagerFlatFileColumn100 flatFileCol = connectionFlatFile.Columns.Add() as RuntimeWrapper.IDTSConnectionManagerFlatFileColumn100;
create_table_script = create_table_script +" ["+ parts[i] + "] nvarchar(max),";
sS_AssignColumnProperties(flatFileCol, parts[i], Delimiter);
}
//Exit file after reading the first line
break;
}
create_table_script = create_table_script.Remove(create_table_script.Length - 1);
create_table_script = create_table_script + ")";
}
catch (Exception ex)
{
throw ex;
}
finally
{
file.Close();
}
}
OleDbConnection conn = new OleDbConnection(Oledb_Connection_String);
conn.Open();
string commandText = create_table_script;
OleDbCommand cmd = new OleDbCommand(commandText, conn);
cmd.ExecuteNonQuery();
conn.Close();
//Edit the last Flat File column delimiter into NewLine instead of a Comma
connectionFlatFile.Columns[connectionFlatFile.Columns.Count - 1].ColumnDelimiter = Environment.NewLine;
//Insert Flat File source component
IDTSComponentMetaData100 componentSource = dataFlowTask.ComponentMetaDataCollection.New();
componentSource.Name = "FlatFileSource";
componentSource.ComponentClassID = "DTSAdapter.FlatFileSource";
//Insert source design-time instance and initialise component
CManagedComponentWrapper instanceSource = componentSource.Instantiate();
instanceSource.ProvideComponentProperties();
//Set source connection
componentSource.RuntimeConnectionCollection[0].ConnectionManagerID = connectionManagerFlatFile.ID;
componentSource.RuntimeConnectionCollection[0].ConnectionManager = DtsConvert.GetExtendedInterface(connectionManagerFlatFile);
//Reinitialize Flat File source metadata,
instanceSource.AcquireConnections(null);
instanceSource.ReinitializeMetaData();
instanceSource.ReleaseConnections();
//Insert the SQL Server 2008 OLE-DB connection
ConnectionManager connectionManagerOleDb = ImportTextFile_pkg.Connections.Add("OLEDB");
connectionManagerOleDb.ConnectionString = string.Format(Oledb_Connection_String);
connectionManagerOleDb.Name = "OLEDB";
connectionManagerOleDb.Description = "OLEDB Connection";
//Insert OLE-DB destination
IDTSComponentMetaData100 componentDestination = dataFlowTask.ComponentMetaDataCollection.New();
componentDestination.Name = "OLEDBDestination";
componentDestination.Description = "OLEDB Destination for the Flat File data load";
componentDestination.ComponentClassID = "DTSAdapter.OLEDBDestination";
//Insert destination design-time instance and initialise component
CManagedComponentWrapper instanceDestination = componentDestination.Instantiate();
instanceDestination.ProvideComponentProperties();
//Set destination connection
componentDestination.RuntimeConnectionCollection[0].ConnectionManagerID = connectionManagerOleDb.ID;
componentDestination.RuntimeConnectionCollection[0].ConnectionManager = DtsConvert.GetExtendedInterface(connectionManagerOleDb);
//Indicates the name of the database object used to open a rowset
instanceDestination.SetComponentProperty("OpenRowset", Destination_Table_Name);
//Specifies the mode used to open the database
instanceDestination.SetComponentProperty("AccessMode", 3);
//Specifies options to be used with fast load. Applies only if fast load is turned on
instanceDestination.SetComponentProperty("FastLoadOptions", "TABLOCK,CHECK_CONSTRAINTS");
//Indicates whether the values supplied for identity columns will be copied to the destination or not
//In this case, we have set this property to false
instanceDestination.SetComponentProperty("FastLoadKeepIdentity", false);
//Indicates whether the columns containing null willhave null inserted in the destination or not
//In this case, we have opted no to insert nulls
instanceDestination.SetComponentProperty("FastLoadKeepNulls", false);
//Specifies the column code page to use when code page information is unavailable from the data source
//In this case we used the default - 1252
instanceDestination.SetComponentProperty("DefaultCodePage", 1252);
//Specifies when commits are issued during data insertion
//In this case, we have opted for the default size which is set to 2147483647
instanceDestination.SetComponentProperty("FastLoadMaxInsertCommitSize", 2147483647);
//Indicates the number of seconds before a command times out
//In this case, we have opted for the default value of 0 which indicates an infinite time-out
instanceDestination.SetComponentProperty("CommandTimeout", 0);
//Indicates the usage of DefaultCodePage property value when describing the character data
//In this case, we have opted for the default value of false
instanceDestination.SetComponentProperty("AlwaysUseDefaultCodePage", false);
//Connect the Flat File source to the OLE DB Destination component
dataFlowTask.PathCollection.New().AttachPathAndPropagateNotifications(componentSource.OutputCollection[0], componentDestination.InputCollection[0]);
//Get input and virtual input for destination to select and map columns
IDTSInput100 destinationInput = componentDestination.InputCollection[0];
IDTSVirtualInput100 destinationVirtualInput = destinationInput.GetVirtualInput();
IDTSVirtualInputColumnCollection100 destinationVirtualInputColumns = destinationVirtualInput.VirtualInputColumnCollection;
//Reinitialize the metadata, generating exernal columns from flat file columns
instanceDestination.AcquireConnections(null);
instanceDestination.ReinitializeMetaData();
instanceDestination.ReleaseConnections();
//Select and map destination columns
foreach (IDTSVirtualInputColumn100 virtualInputColumn in destinationVirtualInputColumns)
{
// Select column, and retain new input column
IDTSInputColumn100 inputColumn = instanceDestination.SetUsageType(destinationInput.ID, destinationVirtualInput, virtualInputColumn.LineageID, DTSUsageType.UT_READONLY);
// Find external column by name
IDTSExternalMetadataColumn100 externalColumn = destinationInput.ExternalMetadataColumnCollection[inputColumn.Name];
// Map input column to external column
instanceDestination.MapInputColumn(destinationInput.ID, inputColumn.ID, externalColumn.ID);
}
//Execute the package or disable the below code if you intend running the package later
ImportTextFile_pkg.Execute();
//Finally, save the package - in this case, we have opted to save the package into file system
//importTextFile_app.SaveToXml(#"D:\newArticle.dtsx", ImportTextFile_pkg, null);
Dts.TaskResult = (int)ScriptResults.Success;
}
private static void sS_AssignColumnProperties(RuntimeWrapper.IDTSConnectionManagerFlatFileColumn100 flatFileCol, string getColName, string getDelim)
{
//Assign delimiter
flatFileCol.ColumnType = "Delimited";
flatFileCol.ColumnDelimiter = getDelim;
flatFileCol.TextQualified = true;
//Indicate column data type - in this case, all the source columns will be set to String Data Type
flatFileCol.DataType = RuntimeWrapper.DataType.DT_WSTR;
//Indicate column width - in this case, width of all source columns will be set to a length of 100
flatFileCol.ColumnWidth = 4000;
flatFileCol.MaximumWidth = 4000;
//Assign column name
RuntimeWrapper.IDTSName100 columnName = flatFileCol as RuntimeWrapper.IDTSName100;
columnName.Name = getColName.ToString();
}
Got the Solution...
Specified CodePage for flat file connection as below,
connectionManagerFlatFile.Properties["CodePage"].SetValue(connectionManagerFlatFile, 65001);
try this
insert into your_table (column_name) values (N'HACKÅS')

C# Importing CSV using OleDb

I'm trying to set up code to import .CSV files into .NET.
I've tried both Microsoft.Jet.OLEDB.4.0 and Microsoft.ACE.OLEDB.12.0 providers, including modifying the Extended Properties and even modifying corresponding registry keys for each. I have yet to come up with a solution for what I am attempting to do:
I would like to import each field as text, but leave fields longer than 255 characters un-truncated.
What I've found so far is that I can have one or the other, but not both.
If I set the ImportMixedTypes registry value to Majority Type, it leaves 255+ character text fields un-truncated, but converts other fields to unwanted types.
If I set the ImportMixedTypes registry value to Text, it truncates 255+ character text fields, but leaves the other field types as text.
How do I accomplish this using OleDb?
Additional info:
I have a "notes" column, which can contain very lengthy text. I also have a "zip code" column, which contains mixed zip-code formats (5-digit and 9-digit with a dash). Typically, the 5-digit zip-code format is more popular, so the importer thinks that the column should be integer type, leaving the 9-digit zip-codes as null values after import.
Have you considered using something as versatile as the FileHelpers library (http://filehelpers.sourceforge.net/) instead?
Or alternatively if your requirements are no more than you state (read csv file, get string fields), use something really simple such as:
public static class SimpleCsvImport
{
public static IEnumerable<List<string>> Import(string csvFileName)
{
using (var reader = File.OpenText(csvFileName))
{
while (!reader.EndOfStream)
{
var fields = reader.ReadLine().Split(new[] { ',' }, StringSplitOptions.None).Select(f => f.Trim()).ToList();
if (fields.Count > 0)
yield return fields;
}
}
}
}
i have implemented this code to read memo field (Microsoft Access):
private string GetMemoField(string TableName, string FieldName, string IdentityFieldName, string IdentityFieldValue, OleDbConnection conn)
{
string ret = "";
OleDbCommand cmd1 = new OleDbCommand("SELECT " + FieldName + " FROM “ + TableName + “ WHERE " + IdentityFieldName + "=" + IdentityFieldValue, conn);
var reader = cmd1.ExecuteReader(System.Data.CommandBehavior.SequentialAccess); // Create the DataReader that will get the memo field one buffer at a time
if (reader.Read())
{
long numberOfChars = reader.GetChars(/*Field pos*/ 0, 0, null, 0, 0); // Total number of memo field's chars
if (numberOfChars > 0)
{
int bufferSize = 1024;
char[] totalBuffer = new char[64*bufferSize]; // Array to hold memo field content
long dataIndex = 0;
do
{
char[] buffer = new char[bufferSize]; // Buffer to hold single read
long numberOfCharsReaded = reader.GetChars(0, dataIndex, buffer, 0, bufferSize);
if (numberOfCharsReaded == 0)
{
ret = new string(totalBuffer,0, (int)numberOfChars);
break;
}
Array.Copy(buffer, 0, totalBuffer, dataIndex, numberOfCharsReaded); // Add temporary buffer to main buffer
dataIndex += numberOfCharsReaded;
} while (true);
}
}
return ret;
}

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