compare two columns values in one data table

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Dear all,

This is My table
rtnumber weldnumber jointnumber weldjointnumber
1 1 1 1-1
2 1 2 1-2
3 1 3 1-3
4 1 4 1-4
5 1 5 1-5
6 1 1 1-1 This time i want show error messange,this datas are already available.
7 2 1 2-1
8 2 2 2-2
9 2 3 2-3
10 2 4 2-4
11 2 5 2-5
12 2 1 2-1This time i want show error messange,this datas are already available.
13 3 1 3-1
14 3 2 3-2
15 3 3 3-3
16 3 4 3-4
17 3 5 3-5
18 3 2 3-2This time i want show error messange,this datas are already available.

My Question:

when i will add data into data table first time it will insert(1,1,1-1),same existing data(1,1,1-1) when i will add second time,this time i want show error message based on the weldnumber and jointnumber columns.

Kindly anybody help me.

ragards
samy

Posted 25-Nov-12 20:09pm

samy555

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pradiprenushe · Answer 1 · 2012-11-25T20:23:00

Solution 1

Create one method to check record exists

C#

private boolean IsRecordExists(int weldnumberValue , int jointnumberValue)
{
//Select rtnumber from mytable where weldnumber= "+weldnumbeValue +" and  jointnumber= "+jointnumberValue+"
//Get values in dataset
//Check dataset table row count
//if 1 return true else false

}

use this method like this

C#

if(!IsRecordExists(1,1))
{
//Data insert code
}
else
{
//Error:Data already available
}

Posted 25-Nov-12 20:23pm

pradiprenushe

Comments

samy555 26-Nov-12 7:57am

private boolean IsRecordExists(int weldnumberValue, int jointnumberValue)
{
SqlConnection cn = new SqlConnection(ConfigurationManager.AppSettings["Connection"]);
SqlCommand Comm1 = new SqlCommand("Select rtnumber from mytable where weldnumber= " + weldnumbeValue + " and jointnumber= " + jointnumberValue + "", cn);
SqlDataAdapter ad = new SqlDataAdapter(Comm1);
DataSet ds = new DataSet();
ad.Fill(ds);
string str = string.Empty;
if (ds.Tables.Count > 1)
{
if (ds.Tables[0].Rows.Count > 1)
{
str = "Vales are Available!Enter it.";
}
}
else
{
str = "Vales are already exists!Please Choose another value.";
}
}

This above coding is correct or any changes is available.

pradiprenushe 27-Nov-12 0:59am

else should be for inner if like this
if (ds.Tables.Count > 1) {
if (ds.Tables[0].Rows.Count == 0)
{
str = "Vales are Available!Enter it.";
}
else
{
str = "Vales are already exists!Please Choose another value.";
}
}

samy555 · Answer 2 · 2012-11-26T02:02:00

private boolean IsRecordExists(int weldnumberValue, int jointnumberValue)
{
SqlConnection cn = new SqlConnection(ConfigurationManager.AppSettings["Connection"]);

SqlCommand Comm1 = new SqlCommand("Select rtnumber from mytable where weldnumber= " + weldnumbeValue + " and jointnumber= " + jointnumberValue + "", cn);

SqlDataAdapter ad = new SqlDataAdapter(Comm1);
DataSet ds = new DataSet();
ad.Fill(ds);
string str = string.Empty;
if (ds.Tables.Count > 1)
{
if (ds.Tables[0].Rows.Count > 1)
{
str = "Vales are Available!Enter it.";
}
}
else
{
str = "Vales are already exists!Please Choose another value.";
}
}

This above coding is correct or any changes is available.Kindly tell me the correct code.