help needed : Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near '='.

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my code:

C#

string strQuery = "Select * from tblStudent where ID = " + txtID.Text;
                da = new SqlDataAdapter(strQuery, con);
                DataSet ds = new DataSet();
                da.Fill(ds,"Students");

Error Message:
Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near '='.

Source Error:
Line 25: da = new SqlDataAdapter(strQuery, con);
Line 26: DataSet ds = new DataSet();
Line 27: da.Fill(ds,"Students");
Line 28:
Line 29: ViewState["Sql_Query"] = strQuery;

Posted 29-Apr-15 11:40am

gaurav.s23

Updated 29-Apr-15 18:59pm

Suvendu Shekhar Giri

v2

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Comments

Abhinav S 29-Apr-15 23:00pm

Is the value of txtID empty or null?
Is ID of a different type than a number?

2 solutions

Solution 1

There are 2 things to consider-
1. If ID is number type then make sure that txtID has some value or not and also make sure that you are passsing numeric data to it.
2. If ID is of type VARCHAR,NVARCHAR,CHAR or NCHAR then you are missing a pair of single quote around the value. Change like this

C#

string strQuery = "Select * from tblStudent where ID = '" + txtID.Text +"'";

Hope, it helps :)

Posted 29-Apr-15 19:07pm

Suvendu Shekhar Giri

Comments

[no name] 30-Apr-15 11:36am

ID is int, primary key and identity. i am trying to get ID as an input from user in the txtID box control to generate rest of the records on the other controls respectively. thank you for the response.

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Karthik_Mahalingam · Accepted Answer · 2015-04-29T19:14:00

Solution 2

Make sure that the txtID.Text is not empty

try something like this, if the ID is integer field

C#

int id =0;
 int.TryParse(txtID.Text, out id);
 string strQuery = "Select * from tblStudent where ID = " + id;

Note:

be aware of SQL Injection[^] ,Sql Injection Attacks[^]

Posted 29-Apr-15 19:14pm

Karthik_Mahalingam

Comments

[no name] 30-Apr-15 11:37am

ID is int, primary key and identity. i am trying to get ID as an input from user in the txtID box control to generate rest of the records on the other controls respectively. thank you for the response.

Karthik_Mahalingam 30-Apr-15 11:43am

so, still you are getting the same error ?

[no name] 30-Apr-15 14:35pm

yes

Karthik_Mahalingam 30-Apr-15 14:39pm

are you online now in gmail ?

Karthik_Mahalingam 30-Apr-15 14:49pm

deleted

[no name] 30-Apr-15 14:50pm

okay sir

[no name] 30-Apr-15 14:56pm

i have added u in my circle, sir

Karthik_Mahalingam 30-Apr-15 14:59pm

ok, ping me