I am getting error this is no row at position 0

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Hi Guys am working on a c# project and in this project, I want to select some data and show in Datagridview but I have data in my DB and I have a query of select but when I click the button so I get this type of error this no row at position 0 please help me guys I just need to deliver this project ASAP,
Thanks.
here are the screenshots https://imgur.com/PKvcgY9
https://imgur.com/aeq0weF
https://imgur.com/8AG3LZ4

What I have tried:

C#

dataGridView4.Columns.Add("", "Leave Consumed");
                dataGridView4.Columns.Add("", "Leave Allaowed");
                dataGridView4.Columns.Add("", "Balance");
                for (int i = 0; i < dataGridView4.Rows.Count; i++)
                {
                    DataSet ds1211122 = new DataSet();
                    DataTable dt1211122 = new DataTable();
                    ds1211122.Tables.Add(dt1211122);
                    OleDbDataAdapter da1211122 = new OleDbDataAdapter();
                    da1211122 = new OleDbDataAdapter("SELECT Sum(USERID) FROM [CHECKINOUT] where [CHECKTYPE]= '" + "I" + "'AND [USERID] = " + dataGridView4.Rows[0].Cells[1].Value.ToString() + "AND [CHECKTIME] Between #" + dateTimePicker2.Value.ToString() + "# AND #" + dateTimePicker1.Value.ToString() + "# Group By [USERID];", VCON);
                    da1211122.Fill(dt1211122);
                    int num = 0;
                    num = Convert.ToInt32(dt1211122.Rows[0][0].ToString());
                    VCON.Close();
                }

Posted 6-Mar-19 12:46pm

Member 9983063

Updated 6-Mar-19 15:19pm

PIEBALDconsult

v2

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PIEBALDconsult 6-Mar-19 20:21pm

I think you're mixing C# and VB.

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Patrice T · Answer 1 · 2019-03-06T15:20:00

Quote:
Error: no row at position 0

Row 0 os the first record of answer of select, what happen when answer is empty?

C#

da1211122 = new OleDbDataAdapter("SELECT Sum(USERID) FROM [CHECKINOUT] where [CHECKTYPE]= '" + "I" + "'AND [USERID] = " + dataGridView4.Rows[0].Cells[1].Value.ToString() + "AND [CHECKTIME] Between #" + dateTimePicker2.Value.ToString() + "# AND #" + dateTimePicker1.Value.ToString() + "# Group By [USERID];", VCON);

Never build an SQL query by concatenating strings. Sooner or later, you will do it with user inputs, and this opens door to a vulnerability named "SQL injection", it is dangerous for your database and error prone.
A single quote in a name and your program crash. If a user input a name like "Brian O'Conner" can crash your app, it is an SQL injection vulnerability, and the crash is the least of the problems, a malicious user input and it is promoted to SQL commands with all credentials.
SQL injection - Wikipedia[^]
SQL Injection[^]
SQL Injection Attacks by Example[^]
PHP: SQL Injection - Manual[^]
SQL Injection Prevention Cheat Sheet - OWASP[^]
How can I explain SQL injection without technical jargon? - Information Security Stack Exchange[^]