How to insert a Null Value to a column if there is no data provided from source file in ASP.NET - sql

Question

I am inserting data from a Text file to table.
and the SPROC is as follows
ALTER PROCEDURE [dbo].[SPROC]
-- Add the parameters for the stored procedure here
#DBName VARCHAR(30),
#FirstLine VARCHAR(MAX)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #InsertQuery NVARCHAR(MAX), #Summary_ID INT
SET #InsertQuery = 'INSERT INTO ' + #DBName + '.[dbo].[Summary] VALUES ( ' + #FirstLine + '); SELECT SCOPE_IDENTITY()'
EXEC SP_EXECUTESQL #InsertQuery
END
Now the thing is, if it has 8 values it will get inserted. If 8 th Value is not there in the text file it is throwing Error column name or number of supplied values does not match table definition
How can i handle this error and If there is no value for 8th column it should insert the value as NULL.
Reading File code:
public static String[] ReadSummary_Into_Array(string filepath)
{
StreamReader sreader = null;
int counter = 0;
try
{
sreader = new StreamReader(filepath);
string line = sreader.ReadLine();
//condition to hanlde empty file
if (line == null) return null;
//condition to hanlde empty first line file
if (line == "") return new String[0];
FirstLine = line;
string cleaned_line = line.Replace("''", "'-'").Replace("','", "''");
string word = "";
List<string> data = new List<string>();
MatchCollection matches = Regex.Matches(cleaned_line, #"'([^']*)");
//String[] words = null;
foreach (Match match in matches)
{
word = match.ToString();
string word_edited = word.Replace("\'", "");
if (word_edited != string.Empty)
{
data.Add(word_edited);
counter++;
}
}
Summary = new String[counter];
Summary = data.ToArray(); //The Summary Line is reconstructed into a String array
return Summary;
}

Answer 1

If you dont have value then you must specify the column names.
Try like this
ALTER PROCEDURE [dbo].[SPROC]
-- Add the parameters for the stored procedure here
#DBName VARCHAR(30),
#FirstLine VARCHAR(MAX)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #InsertQuery NVARCHAR(MAX), #Summary_ID INT, #CountS INT
SET #CountS = len(#FirstLine) - len(replace(#FirstLine, ',', ''))
IF #CountS >= 7 THEN
SET #InsertQuery = 'INSERT INTO ' + #DBName + '.[dbo].[Summary] VALUES ( ' + #FirstLine + '); SELECT SCOPE_IDENTITY()'
ELSE
SET #InsertQuery = 'INSERT INTO ' + #DBName + '.[dbo].[Summary](SerialNumber,AssetNumber,SoftwareRev,TechName,StartTime,StopTime,Status) VALUES ( ' + #FirstLine + '); SELECT SCOPE_IDENTITY()'
END IF
EXEC SP_EXECUTESQL #InsertQuery
END

Answer 2

Similar as Vignesh, but in your C# code
if ( Regex.Matches( strLine, "," ).Count == 7)
{
strLine = strLine + ', null';
}