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Editorial Team
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Asked: 2026-06-02T20:50:11+00:00

i m trying to retrieve the Specialization ID from a table called Specializationtbl, using

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i m trying to retrieve the Specialization ID from a table called Specializationtbl, using C# MSVS 2008 and the table includes SpecializationName and SpecializationID beside some other rows and my question is related to some error ” No Data to present “, the command goes as bellow: 

SqlCommand READSpecID = new SqlCommand("SELECT * FROM Specializationtbl WHERE SpecializationName='" + comboBox1.Text + "'" , DBcnction);
DBcnction.Open();

SqlDataReader ReadSpecID_ = READSpecID.ExecuteReader();
ReadSpecID_.Read();
int SpecID_ = Convert.ToInt16(ReadSpecID_["SpecID"].ToString());

DBcnction.Close();

i also tried to Select the “SpecID” instead of all the rows, but cant seem to seal the query correctly and keep receiving “No data present ” error, any idea where am i making the mistake?

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1 Answer

  1. Editorial Team

    1) Try opening DBcnction before assigning the value to READSPecID

    DBcnction.Open();
SqlCommand READSpecID = new SqlCommand("SELECT * FROM Specializationtbl WHERE     SpecializationName='" + comboBox1.Text + "'" , DBcnction);

    2) Run the command in SSMS:

     SELECT * FROM Specializationtbl WHERE SpecializationName ='yourvalue'

    and see if any results are returned

    3) Check comboBox1.Text has a value in it

    4) Validate the contents of comboBox1.Text (Or use paremetrised queries or a stored procedure) to ensure you do not become a victim of SQL Injection: http://en.wikipedia.org/wiki/SQL_injection

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