i have three columns

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1.00/5 (2 votes)

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column1 column2 column3
2 1133 assam
3 2244 delhi
now suppose from combobox i have select 1133 then how it will compare database values that it is already in database.

Posted 1-Jun-14 23:08pm

tanugarg

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OriginalGriff · Answer 1 · 2014-06-01T23:19:00

Solution 1

Try:

SQL

SELECT COUNT(*) FROM MyTable WHERE MyColumn2=1133

If it returns zero, it's not in the DB.

Posted 1-Jun-14 23:19pm

OriginalGriff

v2

oliver grace · Answer 2 · 2014-06-01T23:25:00

Solution 2

C#

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
   //send DB Call and get the value from database
   
if (comboBox1.SelectedItem.ToString()== "DB value") // Compare here
   {
    
   }
  
}

Posted 1-Jun-14 23:25pm

oliver grace