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Master/Detail DropDownList and DataGrid

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Re: Master/Detail DropDownList and DataGrid

#11

Dec 10th, 2008

i have two drop downlist wen i select india the partcular states shld come....but my selected index function is different from urs....is it correct

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Re: Master/Detail DropDownList and DataGrid

#12

Dec 10th, 2008

Is your DDL filled with each country?

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Re: Master/Detail DropDownList and DataGrid

#13

Dec 10th, 2008

hi myrequirement is i have two dropdownlist one is country n other is statename.....wen i selelc india corresponding states shls come...but i see my selected index function is different from urs...pls explain tat...n is my code right..iam not getting the output....

one more thing how did u create the table for tat category..like i inserted 79 countries.....with id...now in state table i need to insert 28 states for india..
stateid statename countryid.....or i need to have stateid statename1........statename28 countryid

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Re: Master/Detail DropDownList and DataGrid

#14

Dec 10th, 2008

ya i got all the countries wic i inserted into ddllcountryname

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Re: Master/Detail DropDownList and DataGrid

#15

Dec 10th, 2008

I had the same problem my DDL doesnt talk to me back if I just select and do nothing, I couldnt figure out what was the problem because I had selectedChanged event but then until I had a button which I named to go and I didnt code anything on the button I just drag and dropped it so I select something from the DDL and click in the button and it worked just try that to see if its working then u will fix that problem later

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Re: Master/Detail DropDownList and DataGrid

#16

Dec 10th, 2008

its registration form ..i cant keep button na...u find this in many site select country n corresponidng states will come in another dropdownlist...but the code iam not finding

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Re: Master/Detail DropDownList and DataGrid

#17

Dec 10th, 2008

U jst need to make sure that the countryID on the state table is corresponding to the one on the country name, then you can have a select stateme like this on ur dataadpater

 Help with Code Tags 
 SQL Syntax (Toggle Plain Text) 
SELECT * FROM State
WHERE CountryID = ddlCountries.selectedValue;
Select * from State
where CountryID = ddlCountries.selectedValue;

Im sory I cant read your code can u edit it and make it C# instead of just text, its killing me

[ Code=C# ]
Paste code here dont leave
[ /Code ]
there souldnt be any space in between ur square brackets

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Re: Master/Detail DropDownList and DataGrid

#18

Dec 10th, 2008

I think at the moment u can use that to debug and see whats working and what's not working then after that u can fix ur selectedindexchanged event on DDL

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Re: Master/Detail DropDownList and DataGrid

#19

Dec 10th, 2008

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("sql is connected");
SqlDataAdapter da = new SqlDataAdapter("select countryid,countryname from countryname", cn);
DataSet ds = new DataSet();
da.Fill(ds,"countryname");
ddlcountryname.DataSource = ds.Tables["countryname"];
ddlcountryname.DataTextField = "countryname";
ddlcountryname.DataValueField = "countryid";
ddlcountryname.DataBind();
 
 
}
protected void ddlcountryname_SelectedIndexChanged(object sender, EventArgs e)
{
string country_id;
country_id = ddlcountryname.SelectedValue.ToString();
SqlDataAdapter da1=new SqlDataAdapter("select stateid,statename from statename where countryid=' country_id'",cn);
DataSet ds1 = new DataSet();
da1.Fill(ds1, "statename");
ddlstatename.DataSource = ds1.Tables["statename"];
ddlstatename.DataTextField = "statename";
ddlstatename.DataValueField = "stateid";
ddlstatename.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("sql is connected");
SqlDataAdapter da = new SqlDataAdapter("select countryid,countryname from countryname", cn);
DataSet ds = new DataSet();
da.Fill(ds,"countryname");
ddlcountryname.DataSource = ds.Tables["countryname"];
ddlcountryname.DataTextField = "countryname";
ddlcountryname.DataValueField = "countryid";
ddlcountryname.DataBind();


}
protected void ddlcountryname_SelectedIndexChanged(object sender, EventArgs e)
{
string country_id;
country_id = ddlcountryname.SelectedValue.ToString();
SqlDataAdapter da1=new SqlDataAdapter("select stateid,statename from statename where countryid=' country_id'",cn);
DataSet ds1 = new DataSet();
da1.Fill(ds1, "statename");
ddlstatename.DataSource = ds1.Tables["statename"];
ddlstatename.DataTextField = "statename";
ddlstatename.DataValueField = "stateid";
ddlstatename.DataBind();
}

Last edited by peter_budo; Dec 10th, 2008 at 6:50 am. Reason: Correcting closing tag from [\code] to [/code]

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Re: Master/Detail DropDownList and DataGrid

#20

Dec 10th, 2008

SqlDataAdapter da1=new SqlDataAdapter("select stateid,statename from statename where countryid=' country_id'",cn);
Why your country_ID which you declared as a string is within single and double qoutation marks

Try this and see if it helps
SqlDataAdapter da1=new SqlDataAdapter("select stateid,statename from statename where countryid = " + country_id ,cn);

Last edited by Traicey; Dec 10th, 2008 at 5:57 am.

Some people get so rich they lose all respect for humanity. That's how rich I want to be.