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asp.net C# page_load event reads database table and redirects
Hello,
I am trying to code the page_load event read a database table, if a column "Active" has a "1", then redirect to another page, otherwise, load the page normally,
My test page is as follows:
----------------
protected void Page_Load(object sender, EventArgs e)
{
getData();
}
private void getData()
{
// Create a connection
SqlConnection MsgEmergency = new SqlConnection(connectionSt
// Open the connection
MsgEmergency.Open();
// Create a String to hold the query.
string query = "SELECT Active FROM tbl_News WHERE Active=1";
// Create a SqlCommand object and pass the constructor the connection string and the query string.
SqlCommand queryCommand = new SqlCommand(query, MsgEmergency);
//SqlDataReader dr = queryCommand.ExecuteReader
int results = (Int32)queryCommand.Execut
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
MsgEmergency.Close();
}
--------------------------
ANY help would be greatly appreciated.
I am trying to code the page_load event read a database table, if a column "Active" has a "1", then redirect to another page, otherwise, load the page normally,
My test page is as follows:
----------------
protected void Page_Load(object sender, EventArgs e)
{
getData();
}
private void getData()
{
// Create a connection
SqlConnection MsgEmergency = new SqlConnection(connectionSt
// Open the connection
MsgEmergency.Open();
// Create a String to hold the query.
string query = "SELECT Active FROM tbl_News WHERE Active=1";
// Create a SqlCommand object and pass the constructor the connection string and the query string.
SqlCommand queryCommand = new SqlCommand(query, MsgEmergency);
//SqlDataReader dr = queryCommand.ExecuteReader
int results = (Int32)queryCommand.Execut
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
MsgEmergency.Close();
}
--------------------------
ANY help would be greatly appreciated.
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Is the query:
...guaranteed to return exactly one row? If not, then ExecuteScalar is not going to work, and you would need to revert to the ExecuteReader method.
SELECT Active FROM tbl_News WHERE Active=1
...guaranteed to return exactly one row? If not, then ExecuteScalar is not going to work, and you would need to revert to the ExecuteReader method.
kaufmed,
Thank you for the quick reply.
I tried a new tactic. My code follows:
----------
private void getWarning()
{
SqlConnection MsgEmergency = new SqlConnection(connectionSt
SqlDataSource sds = new SqlDataSource();
SqlDataReader EmergencyReader;
sds.SelectCommand = "SELECT Active FROM tblPressRelease_PIO_Emerge
int results = Convert.ToInt32(EmergencyR
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
}
----------
My problem is that the "@Active" is underlined and VS2008 is indicating ") is espected"
Again, my goal is simple: I'm trying to have the "default.aspx" page check to see if there are any rows in my table where "Active = 1" if so, redirect , if not, then load the page as normal..
Again, thanks for the quick reply.
Thank you for the quick reply.
I tried a new tactic. My code follows:
----------
private void getWarning()
{
SqlConnection MsgEmergency = new SqlConnection(connectionSt
SqlDataSource sds = new SqlDataSource();
SqlDataReader EmergencyReader;
sds.SelectCommand = "SELECT Active FROM tblPressRelease_PIO_Emerge
int results = Convert.ToInt32(EmergencyR
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
}
----------
My problem is that the "@Active" is underlined and VS2008 is indicating ") is espected"
Again, my goal is simple: I'm trying to have the "default.aspx" page check to see if there are any rows in my table where "Active = 1" if so, redirect , if not, then load the page as normal..
Again, thanks for the quick reply.
Yes, when I used the ExecuteScalar option, I received only one row.
My goal to have the default.aspx page check a database table on page_load for any "active = 1" entries. If so, then redirect, if not, load the default.aspx normally.
Any help would be greatly appreciated.
My goal to have the default.aspx page check a database table on page_load for any "active = 1" entries. If so, then redirect, if not, load the default.aspx normally.
Any help would be greatly appreciated.
kaufmed,
My code is now ammended to include a SqlDataReader as follows:
----------
protected void Page_Load(object sender, EventArgs e)
{
// getData();
getWarning();
}
private void getWarning()
{
SqlConnection MsgEmergency = new SqlConnection(connectionSt
SqlDataSource sds = new SqlDataSource();
SqlDataReader EmergencyReader;
sds.SelectCommand = "SELECT Active FROM tbl_News WHERE Active=1";
int results = Convert.ToInt32(EmergencyR
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
}
--------------
The error message I see is "specified cast is not valid"
ANY HELP would be greatly appreciated.
My code is now ammended to include a SqlDataReader as follows:
----------
protected void Page_Load(object sender, EventArgs e)
{
// getData();
getWarning();
}
private void getWarning()
{
SqlConnection MsgEmergency = new SqlConnection(connectionSt
SqlDataSource sds = new SqlDataSource();
SqlDataReader EmergencyReader;
sds.SelectCommand = "SELECT Active FROM tbl_News WHERE Active=1";
int results = Convert.ToInt32(EmergencyR
if (results != 1)
Response.Redirect("default
else
Response.Redirect("default
}
--------------
The error message I see is "specified cast is not valid"
ANY HELP would be greatly appreciated.
protected void Page_Load(object sender, EventArgs e)
{
// getData();
getWarning();
}
private void getWarning()
{
using(SqlConnection con = new SqlConnection(connectionSt
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT Active FROM tbl_News WHERE Active=1",con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
Response.Redirect("default
}
else
{
Response.Redirect("default
}
}
}
{
// getData();
getWarning();
}
private void getWarning()
{
using(SqlConnection con = new SqlConnection(connectionSt
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT Active FROM tbl_News WHERE Active=1",con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
Response.Redirect("default
}
else
{
Response.Redirect("default
}
}
}
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