CODEWITHSUNDEEP
c#sqlsql-server
RashReigns
RashReigns

Reputation: 23

Must Declare Scalar Variable

private void button3_Click(object sender, EventArgs e)
    {
        string ssr;
        SqlConnection scr = new SqlConnection(@"Data Source=USER-PC\MSSQL;Initial Catalog=Highscore;Integrated Security=True");
        scr.Open();
        ssr = "Select Nume,Scor,DataInitiala,DataRecenta FROM Users where DataInitiala between @Param and @Param1 ";
        SqlCommand cmd2 = new SqlCommand(ssr, scr);
        cmd2.Parameters.AddWithValue("@Param", from.Text);
        cmd2.Parameters.AddWithValue("@Param1", to.Text);
        SqlDataAdapter adapter1 = new SqlDataAdapter(ssr, scr);
        DataSet ds1 = new DataSet();
        adapter1.Fill(ds1);
        dataGridView1.DataSource = ds1.Tables[0];
        dataGridView1.Refresh();  


    }

What am I missing here?I have the error Must Declare scalar variable @Param

Upvotes: 1

Views: 898

Answers (2)

Amol Pachpande
Amol Pachpande

Reputation: 1

please see the below query:

private void button3_Click(object sender, EventArgs e)
    {
        string ssr;
        SqlConnection scr = new SqlConnection(@"Data Source=USER-PC\MSSQL;Initial Catalog=Highscore;Integrated Security=True");
        scr.Open();
        ssr = "Select Nume,Scor,DataInitiala,DataRecenta FROM Users where DataInitiala between @Param and @Param1 ";
        SqlCommand cmd2 = new SqlCommand(ssr, scr);
        cmd2.Parameters.AddWithValue("@Param", from.Text);
        cmd2.Parameters.AddWithValue("@Param1", to.Text);
        SqlDataAdapter adapter1 = new SqlDataAdapter();
        adapter1.SelectCommand = cmd2;
        DataSet ds1 = new DataSet();
        adapter1.Fill(ds1);
        dataGridView1.DataSource = ds1.Tables[0];
        dataGridView1.Refresh();         
    }

Upvotes: 0

Vignesh Kumar A
Vignesh Kumar A

Reputation: 28403

Actually you declaring Parameters variable in cmd2 but you are calling ssr in adapter1.

Try this

private void button3_Click(object sender, EventArgs e)
    {
        string ssr;
        SqlConnection scr = new SqlConnection(@"Data Source=USER-PC\MSSQL;Initial Catalog=Highscore;Integrated Security=True");
        scr.Open();
        ssr = "Select Nume,Scor,DataInitiala,DataRecenta FROM Users where DataInitiala between @Param and @Param1 ";
        SqlCommand cmd2 = new SqlCommand(ssr, scr);
        cmd2.Parameters.AddWithValue("@Param", from.Text);
        cmd2.Parameters.AddWithValue("@Param1", to.Text);
        SqlDataAdapter adapter1 = new SqlDataAdapter();
        adapter1.SelectCommand = cmd2;
        DataSet ds1 = new DataSet();
        adapter1.Fill(ds1);
        dataGridView1.DataSource = ds1.Tables[0];
        dataGridView1.Refresh();         
    }

Upvotes: 2

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