its related to dropdownlist

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i have 1 dropdownlist and i m binding thatby coding and on its datatextfield property i m binding by company name and DataValueField by company id.and at the time of insertion i m using the dropdown's selected value to insert the company code in database and its datatype is int so i m converting that in integer but its not doing work giving exception at runtime that input string is not in correct format..

Code is as follows:=

C#

try
                {
                    SqlDataAdapter adap = new SqlDataAdapter("select br_id,br_name,cmp_id from branch where br_code='" + Session["relative_dept"].ToString() + "'", con);
                    DataTable dt1 = new DataTable();
                    adap.Fill(dt1);
                    if(dt1.Rows.Count > 0)
                    {
                     for(int i = 0; i < dt1.Rows.Count; i++)
                     {
                    str = dt1.Rows[0]["cmp_id"].ToString();
                    ddl_brid.DataSource = dt1;
                    ddl_brid.DataTextField = dt1.Rows[i]["br_name"].ToString();
                    ddl_brid.DataValueField = dt1.Rows[i]["br_id"].ToString();
                    ddl_brid.Items.Add(dt1.Rows[i]["br_name"].ToString());
                     }
                    }
                    
                }
                catch { }

and at insertion button>
 SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["CRMConnectionString"].ConnectionString);
        if (con.State == ConnectionState.Closed)
            con.Open();
        try
        {
            SqlCommand cmd = new SqlCommand("insert into department(cmp_id,br_id,dept_name,dept_description) values(@cmp_id,@br_id,@dept_name,@dept_description)", con);
            cmd.Parameters.AddWithValue("@cmp_id", Convert.ToInt32(ddl_company.SelectedValue));
            cmd.Parameters.AddWithValue("@br_id",Convert.ToInt32(ddl_brid.SelectedValue));            
            cmd.Parameters.AddWithValue("@dept_name",txt_deptname.Text);
            cmd.Parameters.AddWithValue("@dept_description",txt_description.Text);
            cmd.ExecuteNonQuery();
            ScriptManager.RegisterStartupScript(this, this.GetType(), "Success", "<script>alert('Department Created');window.location.href = 'logindetails.aspx'; </script>", false);
            Session["dept"] = "DA";
        }
        catch(Exception ex)
        {
            ScriptManager.RegisterStartupScript(this,this.GetType(), "Failed", "alert('Department Creation Failed.')",true);
        }

Posted 17-Oct-11 3:01am

pallavi ajin

Updated 17-Oct-11 3:04am

uspatel

v2

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Comments

uspatel 17-Oct-11 9:04am

pre tag added

I.explore.code 17-Oct-11 9:24am

ok, this is not directly related to your question and hence I am adding this as a comment. I would recommned turning the Select query into a parametrised query too just like you have done for the insert statement just a few lines down...

Cheers.

3 solutions

Solution 1

Hi,

you've to change some code

C#

if(dt1.Rows.Count > 0)
                  {
                   for(int i = 0; i < dt1.Rows.Count; i++)
                   {

                  ddl_brid.Items.Add(new ListItem(dt1.Rows[i]["br_name"].ToString(), dt1.Rows[i]["br_id"].ToString()));
                   }
         }

All the Best

Posted 17-Oct-11 3:16am

Muralikrishna8811

Solution 3

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SqlConnection con;
SqlDataAdapter ad;
DataSet ds = new DataSet();
DataTable dt;

ad = new SqlDataAdapter("select strSectionName,intSectionId from JPCMstSection", (SqlConnection)Application.Get("con"));
ad.Fill(ds, "JPCMstSection");
dt = ds.Tables["JPCMstSection"];
for (int i = 0; i < dt.Rows.Count; i++)
{
dropdownlist1.Items.Add(dt.Rows[i]["strsectionName"].ToString());
dropdownlist1.Items[i].Value = dt.Rows[i]["intSectionId"].ToString();
}
ds.Clear();
dt.Clear();
return;
}
}

try this

Regards,
Anilkumar.D

Posted 17-Oct-11 19:11pm

Anil Honey 206

Updated 17-Oct-11 19:13pm

v2

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virang_21 · Accepted Answer · 2011-10-17T11:43:00

C#

if(dt1.Rows.Count > 0)
                   {
                    for(int i = 0; i < dt1.Rows.Count; i++)
                    {
                   str = dt1.Rows[0]["cmp_id"].ToString();
                   ddl_brid.DataSource = dt1;
                   ddl_brid.DataTextField = dt1.Rows[i]["br_name"].ToString();
                   ddl_brid.DataValueField = dt1.Rows[i]["br_id"].ToString();
                   ddl_brid.Items.Add(dt1.Rows[i]["br_name"].ToString());
                    }
                   }

You don't have to add it one by one. Change your above block of code to

C#

if(dt1.Rows.Count > 0)
{
ddl_brid.DataSource = dt1;
ddl_brid.DataTextField = "br_name";
ddl_brid.DataValueField = "br_id";
ddl_brid.DataBind();
}