when i check the check box it able to loop and get the userid and productname but why not able let me delete?
foreach (GridViewRow row in GridView1.Rows)
{
var check = row.FindControl("chkdelete") as CheckBox;
if (check.Checked)
{
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
SqlConnection con = new SqlConnection(connStr);
var uid = row.FindControl("lbluserid") as Label;
var pid = row.FindControl("lblproductname") as Label;
SqlCommand cmd = new SqlCommand("delete from ProductReview where userID=#id and productid=#pid", con);
cmd.Parameters.AddWithValue("#id", uid.Text);
cmd.Parameters.AddWithValue("#pid", pid.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
}
can you try the same thing like this.
foreach (GridViewRow row in GridView1.Rows)
{
var check = row.FindControl("chkdelete") as CheckBox;
if (check.Checked)
{
var uid = row.FindControl("lbluserid") as Label;
var pid = row.FindControl("lblproductname") as Label;
DatabaseHelperClass.DoDatabaseOperation(uid.Text.Trim(), pid.Text.Trim());
}
}
Class DatabaseHelperClass
{
Public static void DoDatabaseOperation(string uid , string pid)
{ string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
SqlConnection con = new SqlConnection(connStr);
SqlCommand cmd = new SqlCommand("delete from ProductReview where userID=#id and productid=#pid", con);
cmd.Parameters.AddWithValue("#id", uid);
cmd.Parameters.AddWithValue("#pid", pid);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
}
Related
i want to retrieve image from database but this code did not display any thing.
image data type in database is image.I dont know what is wrong with this code
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Session["pro_ID"]);
int id = Convert.ToInt32(Session["pro_id"]);
SqlConnection conn = new SqlConnection("Data source=DESKTOP-QPTTS3M;initial catalog=shopolic;integrated security=True;");
conn.Open();
SqlCommand cmd = new SqlCommand("spgetimage", conn);
cmd.CommandType = CommandType.StoredProcedure;
SqlParameter param = new SqlParameter() { ParameterName = "#id", Value = Session["pro_id"] };
cmd.Parameters.Add(param);
//cmd.ExecuteScalar();
SqlCommand cmd2 = new SqlCommand("select *from product where product_ID='" + Session["pro_id"] + "'", conn);
// cmd2.ExecuteNonQuery();
SqlDataReader dr = cmd2.ExecuteReader();
if (dr.Read())
{
name.Text = dr["name"].ToString();
byte[] img = (byte[])(dr["image"]);
if (img == null)
{
Image1.ImageUrl = "~/Images/bg.png";
}
else
{
string base64String = Convert.ToBase64String(img);
Image1.ImageUrl = String.Format("data:image/jpg;base64,{0}", base64String);
// MemoryStream ms = new MemoryStream(img);
}
}
// byte[] bytes = (byte[])cmd.ExecuteScalar();
// string strbase64 = Convert.ToBase64String(bytes);
//Image1.ImageUrl = "data:Image/png;base64,"+strbase64;
//SqlDataReader dr = cmd.ExecuteReader();
//DataTable DT = new DataTable();
conn.Close();
}
i want to update user information .so first i want when user click on update button than all the field display with their values in text box so that user can able to edit his profile.
i got an error :Procedure or function 'updatefill' expects parameter '#email', which was not supplied.
please help me out from this error...
Thank you.
public partial class updateuser : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["cnstr"].ConnectionString);
SqlCommand cmd;
SqlDataAdapter da;
DataTable dt;
SqlDataReader dr;
string str1="";
protected void Page_Load(object sender, EventArgs e)
{
{
con.Open();
cmd = new SqlCommand("updatefill", con);
cmd.CommandType = CommandType.StoredProcedure;
da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds,"registr");
fname.Text = ds.Tables["registr"].Rows[0]["fname"].ToString();
lname.Text = ds.Tables["registr"].Rows[0]["lname"].ToString();
uid.Text = ds.Tables["registr"].Rows[0]["email"].ToString();
pwd.Text = ds.Tables["registr"].Rows[0]["password"].ToString();
pwd1.Text = ds.Tables["registr"].Rows[0]["confirmpassword"].ToString();
mbl.Text = ds.Tables["registr"].Rows[0]["mobile"].ToString();
con.Close();
}
}
protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
{
if (RadioButton1.Checked)
{
str1 = "Male";
}
else if (RadioButton2.Checked)
{
str1 = "Female";
}
else
{
str1 = "please select gender";
}
}
protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
{
}
protected void Button2_Click(object sender, EventArgs e)
{
con.Open();
cmd = new SqlCommand("update_user_details", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("#fname", SqlDbType.VarChar).Value = fname.Text;
cmd.Parameters.Add("#lname", SqlDbType.VarChar).Value = lname.Text;
cmd.Parameters.Add("#email", SqlDbType.VarChar).Value = uid.Text;
cmd.Parameters.Add("#mobile", SqlDbType.VarChar).Value = mbl.Text;
cmd.Parameters.Add("#password", SqlDbType.VarChar).Value = pwd.Text;
cmd.Parameters.Add("#confirmpassword", SqlDbType.VarChar).Value = pwd1.Text;
cmd.Parameters.Add("#gender", str1);
dt = new DataTable();
da = new SqlDataAdapter(cmd);
da.Fill(dt);
int s = Convert.ToInt32(dt.Rows[0][0]);
if (s == 1)
{
errmsg.Text = "Update Successfull";
Response.Redirect("userhome.aspx");
}
else
{
errmsg.Text = "Update Faild";
con.Close();
}
ALTER PROCEDURE [dbo].[updatefill]
#email varchar(50)
AS
BEGIN
select * from registr where email=#email
END
Here is an example using the Reader:
String connStr = ConfigurationManager.ConnectionStrings["DB1"].ConnectionString;
String cmdStr = "SELECT [col2],[col3] FROM [Table1] WHERE [col1]=#col1;";
try
{
using (SqlConnection conn = new SqlConnection(connStr))
{
using (SqlCommand cmd = new SqlCommand(("updatefill", con);
{
cmd.CommandType = C0mmandType.StoredProcedure;
conn.Open();
using (SqlDataReader rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
fname.Text = rdr[0];
lname.Text = rdr[1]
uid.Text = rdr[2]
pwd.Text = rdr[3]
pwd1.Text = rdr[4];
mbl.Text = rdr[5];
}
}
conn.Close();
cmd.Dispose();
conn.Dispose();
}
}
}
catch (Exception ex)
{
Label1.Text = ex.ToString();
}
I am using this code to search for selected items inside a checkbox list and it doesn't work.
protected void btnSearchCode_Click(object sender, ImageClickEventArgs e)
{
string selectedValues = string.Empty;
foreach (ListItem item in cblCode.Items)
{
if (item.Selected)
selectedValues += item.Value + ",";
}
if (selectedValues != string.Empty)
selectedValues = selectedValues.Remove(selectedValues.Length - 1);
cblCode.DataSource = DataReport.SearchCode(selectedValues);
cblCode.DataBind();
}
public static DataTable SearchCode(string selectedValues)
{
string strcon = ConfigurationManager.ConnectionStrings["LocalDB"].ConnectionString;
DataTable datatable = new DataTable();
using (SqlConnection conn = new SqlConnection(strcon))
{
conn.Open();
SqlCommand command = new SqlCommand();
string strQuery = "Select Group, Name from Details where Code in (" + selectedValues + ")", conn;
command.Connection = conn;
SqlDataAdapter dataadapter = new SqlDataAdapter();
dataadapter.SelectCommand = command;
DataSet ds = new DataSet();
dataadapter.Fill(datatable);
}
return datatable;
}
Really appreciate any help on this.
You have not used strQuery at all.
Try this :
public static DataTable SearchCode(string selectedValues)
{
string strcon = ConfigurationManager.ConnectionStrings["LocalDB"].ConnectionString;
DataTable datatable = new DataTable();
using (SqlConnection conn = new SqlConnection(strcon))
{
conn.Open();
string strQuery = "Select Group, Name from Details where Code in (" + selectedValues + ")";
SqlCommand command = new SqlCommand(strQuery, conn);
SqlDataAdapter dataadapter = new SqlDataAdapter();
dataadapter.SelectCommand = command;
DataSet ds = new DataSet();
dataadapter.Fill(datatable);
}
return datatable;
}
You create the query string but you never assign it to the command variable. Therefore, when you assign it to selectCommand, there isn't anything to query from DB. You want to add this line of code to assign the query string to variable:
command = new SqlCommand(strQuery,conn);
Always Use SqlParamerter while passing parameters to the database
i think You are missing single inverted comma because Your SeletedValues is string
string strQuery = "Select Group, Name from Details
where Code in ('" + selectedValues + "')", conn;
i am adding multiple checkboxes in my asp.net page by doing this:
public static CheckBox[] chck;
on pageload:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
con.Open();
SqlCommand cmd = new SqlCommand("select count(CompanyName) from Stock_Company");
cmd.Connection = con;
comno = Convert.ToInt32(cmd.ExecuteScalar());
con.Close();
chck = new CheckBox[comno];
}
}
now i have a function which is generating the checkboxes :
public void generatecheckbox1()
{
con.Open();
SqlCommand cmd = new SqlCommand("select CompanyName from Stock_Company");
cmd.Connection = con;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
DataTable dt = ds.Tables[0];
con.Close();
for (int i = 0; i < dt.Rows.Count; i++)
{
chck[i] = new CheckBox();
chck[i].ID = "chck" + Convert.ToString(i);
chck[i].Text = dt.Rows[i]["CompanyName"].ToString();
pnlcom1.Controls.Add(chck[i]);
pnlcom1.Controls.Add(new LiteralControl("<br />"));
}
}
and i am calling this on a combobox event:
protected void ddluserwebser_SelectedIndexChanged(object sender, EventArgs e)
{
if (ddluserwebser.SelectedItem.Text == "Custom")
{
generatecheckbox1();
}
}
as far as this all are working fine ... but in a button click i want to get the select checkbox's text which i am not getting
i made a function :
public string getbsecompany()
{
string companyname = "";
string bsetricker = "";
con.Open();
SqlCommand cmd = new SqlCommand("select CompanyName from Stock_Company");
cmd.Connection = con;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
DataTable dt = ds.Tables[0];
con.Close();
for (int i = 0; i < dt.Rows.Count; i++)
{
if (chck[i].Checked == true) **THE PROBLEM IS HERE**
{
companyname = chck[i].Text;
con.Open();
SqlCommand cmdd = new SqlCommand("select BSETickerCode from Stock_Company where CompanyName='" + companyname + "'");
cmdd.Connection = con;
bsetricker += bsetricker + "+" + cmdd.ExecuteScalar();
con.Close();
}
}
return bsetricker;
}
and i am calling it here:
protected void btnusersave_Click(object sender, EventArgs e)
{
string bsetricker = "";
bsetricker = getbsecompany();
}
the problem is i am not getting the checked box's text. when i am checking if (chck[i].Checked == true) i am gettin false and all checkboxes are checked.
What should i do now?
any help
The dynamic controls should added to page in On_Init() for each time if you want it display in page.
Else there's nothing you can get.
Plus, better not use a static value to contains checkBox List, it will cause problem when multi user access same page. You can save them in session or try this.Form.FindControls()
string ConnectionString = WebConfigurationManager.ConnectionStrings["dbnameConnectionString"].ConnectionString;
SqlConnection myConnection = new SqlConnection(ConnectionString);
myConnection.Open();
try
{
string qry = "UPDATE customers SET firstname=#firstname WHERE cid=1";
SqlCommand insertQuery = new SqlCommand(qry, myConnection);
insertQuery.Parameters.Add(new SqlParameter("#firstname", txtFirstname.Text));
insertQuery.ExecuteNonQuery();
myConnection.Close();
}
catch (Exception ee)
{
}
Any suggestions?
A little cleanup of your code you may like to try (you should dispose IDisposable objects):
string ConnectionString = // ...
using (var connection = new SqlConnection(ConnectionString))
using (var command = connection.CreateCommand())
{
connection.Open();
command.CommandText = "UPDATE customers SET firstname = #firstname WHERE cid=1";
command.Parameters.AddWithValue("#firstname", txtFirstname.Text);
var rowsUpdated = command.ExecuteNonQuery();
}