how it can be solved

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i have a dropdown list it contains bookid and book name,i have binded it inside the grid view in row databound control,now i want to save the data that requires book id bt during save there will be no access of that book id from drop down that contains inside the grid view control.how it can be solved

C#

protected void gvStock_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        try
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                Label ddlBookId = (Label)e.Row.FindControl("lblId");
                DropDownList ddlBookName = (DropDownList)e.Row.FindControl("ddlBookName");
                Exception ex;
                DataTable dtblBookName = new DataTable();
                BllBookMaster obj = new BllBookMaster();
                switch (obj.GetAllBookNames(ref dtblBookName, out ex))
                {
                    case 1:
                        DataRow dr = dtblBookName.NewRow();
                        dr["bookid"] = "-1";
                        dr["bookname"] = "Select";
                        dtblBookName.Rows.InsertAt(dr, 0);
                        ddlBookName.DataValueField = "bookid";
                        ddlBookName.DataTextField = "bookname";
                        ddlBookName.DataSource = dtblBookName;
                        ddlBookName.DataBind();
                      
                        break;
                    case -1:
                        lblMsg.Text = ex.Message.ToString();
                        break;
                    case 0:
                       
                        lblMsg.Text = "error";
                        break;

                }
              
            }
        }
        catch (Exception ex)
        {
            lblMsg.Text = ex.Message.ToString();
        }
    }

Posted 30-Aug-12 21:25pm

er.deepshikha

Updated 30-Aug-12 21:38pm

__TR__

v2

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Comments

Zoltán Zörgő 31-Aug-12 3:29am

Language?

__TR__ 31-Aug-12 3:29am

Post your code so we can take a look at it.

_Amy 31-Aug-12 3:30am

What have you tried yet? Where is your code?

[no name] 31-Aug-12 3:33am

protected void gvStock_RowDataBound(object sender, GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label ddlBookId = (Label)e.Row.FindControl("lblId");
DropDownList ddlBookName = (DropDownList)e.Row.FindControl("ddlBookName");
Exception ex;
DataTable dtblBookName = new DataTable();
BllBookMaster obj = new BllBookMaster();
switch (obj.GetAllBookNames(ref dtblBookName, out ex))
{
case 1:
DataRow dr = dtblBookName.NewRow();
dr["bookid"] = "-1";
dr["bookname"] = "Select";
dtblBookName.Rows.InsertAt(dr, 0);
ddlBookName.DataValueField = "bookid";
ddlBookName.DataTextField = "bookname";
ddlBookName.DataSource = dtblBookName;
ddlBookName.DataBind();

break;
case -1:
lblMsg.Text = ex.Message.ToString();
break;
case 0:

lblMsg.Text = "error";
break;

}

}
}
catch (Exception ex)
{
lblMsg.Text = ex.Message.ToString();
}
}

2 solutions

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Dasaradhi_r · Answer 1 · 2012-08-30T21:37:00

Solution 2

While binding dropdown list control you need to set three properties.
Say "ddlBook" is dropdown control. It should be as shown below.

C#

ddlBook.DataSource = dictCountries;
ddlBook.DataTextField = "Text";
ddlBook.DataValueField = "Value";
ddlBook.DataBind();

If you set the text and value fields. You will be able to access the value with below code:

C#

string selectedVal = ddlBook.SelectedValue.ToString();

If you are able to find the instance of the drop down inside the grid row, then the above code works.

Posted 30-Aug-12 21:37pm

Dasaradhi_r

Comments

[no name] 31-Aug-12 3:43am

but this selectedVal not accessible there on the save click

Dasaradhi_r 31-Aug-12 3:48am

What do you mean by not accessible? Is it having null value?

Dasaradhi_r 31-Aug-12 3:48am

And also tell me this:
On Save click, are you able to get the instance of the drop down inside the GRID ROW?

[no name] 31-Aug-12 3:55am

can you please tell me how to find instance of dropdown list

Dasaradhi_r 31-Aug-12 4:07am

Say "ddlBook" is the dropdown control, "gv" is your grid view.
If you want to find control from 1st row of the grid view, It should be done like below:

DropDownList ddlBookInstance=(DropDownList)(gv.Rows[0].FindControl["ddlBook"]);
string selectedVal = ddlBookInstance.SelectedValue.ToString();

if you want to loop through the rows, you can do it like below

foreach (GridViewRow row in gv.Rows)
{
DropDownList ddlBookInstance = (DropDownList)(row.FindControl["ddlBook"]);
string selectedVal = ddlBookInstance.SelectedValue.ToString();
}

Dasaradhi_r 31-Aug-12 4:09am

Its not readble, so i am putting it as a different solution

Dasaradhi_r 31-Aug-12 7:37am

Did it help?

Dasaradhi_r · Answer 2 · 2012-08-30T22:12:00

Say "ddlBook" is the dropdown control, "gv" is your grid view. If you want to find control from 1st row of the grid view, It should be done like below:

C#

DropDownList ddlBookInstance=(DropDownList)(gv.Rows[0].FindControl);
string selectedVal = ddlBookInstance.SelectedValue.ToString(); }

if you want to loop through all the rows, you can do it like below:

C#

foreach (GridViewRow row in gv.Rows) 
{
 DropDownList ddlBookInstance = (DropDownList)(row.FindControl); 
 string selectedVal = ddlBookInstance.SelectedValue.ToString(); 
}