how to fill dropdown item selectindex change

Posted by Shail12345 under ASP.NET on 11/11/2013 | Points: 10 | Views : 1231 | Status : [Member] | Replies : 4

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Hi All Senior Sir,
i have two dropdown
one is PropNature(Commercial,Reidentail)two field
second is propType(1bhk,2bhk,office,plot etc)
i bind both dropdownlist and data show in dropdownlist but requrement is that
if user select (Residentail)[PropNature]dropdownlist then show only 1bhk,2bhk,3bhk,4bhk,
and user select (commercial)[propnature]dropdownlist then show only office,plot,corpateoffice
I have two table is that
PropNature tableName
PID int,
PropName(Residentail,Commercial)

and second Table is
PropType TableName
PropId int,
PropName(1bhk,2bhk,Office,Plot)
plz suggest me
thanks

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Posted by: Bandi on: 11/11/2013 [Member] [MVP] Platinum | Points: 25

0	PropNature tableName PID int Primary key, PropName(Residentail,Commercial) 1 Residential 2 Commercial and second Table is PropType TableName PropId int, PropName(1bhk,2bhk,Office,Plot) , -- Add one more column to represent PropNature PID INT references PropNature( PID) 1 1bhk 1 2 2bhk 1 3 3bhk 1 4 office 2 5 plot 2 And follow this link for population of drop downlist based on another drop down http://www.aspdotnet-suresh.com/2010/10/how-to-populate-dropdown-based-on-other.html Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shail12345, if this helps please login to Mark As Answer. \| Alert Moderator

PropNature tableName
PID int Primary key,
PropName(Residentail,Commercial)

1 Residential
2 Commercial

and second Table is
PropType TableName
PropId int,
PropName(1bhk,2bhk,Office,Plot) ,
-- Add one more column to represent PropNature
PID INT references PropNature( PID)

1 1bhk 1
2 2bhk 1
3 3bhk 1
4 office 2
5 plot 2

And follow this link for population of drop downlist based on another drop down
http://www.aspdotnet-suresh.com/2010/10/how-to-populate-dropdown-based-on-other.html

Mark This Response as Answer
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Chandu
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Posted by: Bandi on: 11/11/2013 [Member] [MVP] Platinum | Points: 25

0	Code should as follwos: //binding drop down list PropNature protected void BindContrydropdown() { //conenction path for database SqlConnection con = new SqlConnection(strConnection); con.Open(); SqlCommand cmd = new SqlCommand("select * from PropNature", con); SqlDataAdapter da = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds); con.Close(); ddlNature.DataSource = ds; ddlNature.DataTextField = "PropName"; ddlNature.DataValueField = "PropName"; ddlNature.DataBind(); ddlNature.Items.Insert(0, new ListItem("--Select--", "0")); ddlType.Items.Insert(0, new ListItem("--Select--", "0")); } //populating PropType drop down based on PropNature value protected void ddlNature_SelectedIndexChanged(object sender, EventArgs e) { string NatureID = ddlNature.SelectedValue; SqlConnection con = new SqlConnection(strConnection); con.Open(); SqlCommand cmd = new SqlCommand("select * from PropType where PID IN ( SELECT PID FROM PropNature WHERE PropName = '"+NatureID + "' )", con); SqlDataAdapter da = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds); con.Close(); ddlType.DataSource = ds; ddlType.DataTextField = "PropName"; ddlType.DataValueField = "PropName"; ddlType.DataBind(); ddlType.Items.Insert(0, new ListItem("--Select--", "0")); } Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shail12345, if this helps please login to Mark As Answer. \| Alert Moderator

Code should as follwos:


//binding drop down list PropNature 
protected void BindContrydropdown()
{
//conenction path for database
SqlConnection con = new SqlConnection(strConnection);
con.Open();
SqlCommand cmd = new SqlCommand("select * from PropNature", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
con.Close();
ddlNature.DataSource = ds;
ddlNature.DataTextField = "PropName";
ddlNature.DataValueField = "PropName";
ddlNature.DataBind();
ddlNature.Items.Insert(0, new ListItem("--Select--", "0"));
ddlType.Items.Insert(0, new ListItem("--Select--", "0"));
}

//populating PropType drop down based on PropNature value  
protected void ddlNature_SelectedIndexChanged(object sender, EventArgs e)
{
string NatureID = ddlNature.SelectedValue;
SqlConnection con = new SqlConnection(strConnection);
con.Open();
SqlCommand cmd = new SqlCommand("select * from PropType where PID IN ( SELECT PID FROM PropNature WHERE PropName = '"+NatureID + "' )", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
con.Close();
ddlType.DataSource = ds;
ddlType.DataTextField = "PropName";
ddlType.DataValueField = "PropName";
ddlType.DataBind();
ddlType.Items.Insert(0, new ListItem("--Select--", "0"));
}

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Posted by: Shail12345 on: 11/12/2013 [Member] Starter | Points: 25

0	thanks sir nice code Shail12345, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Bandi on: 11/12/2013 [Member] [MVP] Platinum | Points: 25

0	click on "Mark as Answer " Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shail12345, if this helps please login to Mark As Answer. \| Alert Moderator

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