The problem of passing the value of a column in the DataGrid through Session when clicking

天风鲁伊

I use the following method to open a new page when the user clicks on the DataGrid:
private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
e.Item.Attributes.Add ("onclick","window.open('yl.aspx?ID="+e.Item.Cells [0].Text +"')");
}
Now I don’t want to pass the value through url, I want to do it through Session:
private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
e.Item.Attributes.Add ("onclick","window.open('yl.aspx?')");
Session["LoginName"]=e.Item.Cells [0].Text;
}
But when I received it on another page, I found that Session["LoginName"] is a space character&nbsp, what is going on?

ymooner

Since the data of each row is different in state timing, to distinguish different rows, you need to find a keyword.

private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//Fake code
Session["key"+key value of data, such as id as the key of Session] = e.Item.Cells[0].Text;
e.Item.Attributes.Add ("onclick","window.open('yl.aspx?ID="+ key value of data, such as id as the key of Session + "')");
}

In addition, when getting the Session, you need to pass this keyword to get the correct data without confusion.

天风鲁伊

The key value of the data is e.Item.Cells[0].Text, but now the value of e.Item.Cells[0].Text is not passed normally, it becomes&nbsp, how to solve it?

sukdevils

Try it with a click event

天风鲁伊

Xie Bangding upstairs, has nothing to do with the incident?

ymooner

Now the value of e.Item.Cells[0].Text is not passed normally, it becomes&nbsp, how to solve it?
You print out if there is any value before saving,
private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
Response.Write ("<li>"+ e.Item.Cells[0].Text);

}

天风鲁伊

Session["LoginName"]=e.Item.Cells [0].Text; This sentence has a value when the form is loaded. When the mouse clicks, there is no value. It is null, and then the next When the page is fetched, it becomes&nbsp

Boss Meng, help me solve it, thank you

xwgjyhl

debug.

aaajet

It is recommended that the landlord determine the scope of e
Determine whether the current e object belongs to an alternate item, an edit item, or an item

terrysx

I use the following method to open a new page when the user clicks on the DataGrid:
private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
e.Item.Attributes.Add ("onclick","window.open('yl.aspx?ID="+e.Item.Cells [0].Text +"')");
}
Now I don’t want to pass the value through url, I want to do it through Session:
private void DataGrid1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
e.Item.Attributes.Add ("onclick","window.open('yl.aspx?')");
Session["LoginName"]=e.Item.Cells [0].Text;
}
But when I received it on another page, I found that Session["LoginName"] was a space character. What is going on?

================================================= =======

Take Session["LoginName"]=e.Item.Cells [0].Text; this line of code from the ItemDataBound event
Put it in the command event

I have used gridview before using datagrid. Just laughed

When binding data, it is executed in a loop. Assigning a value to session["LoginName"] in the loop is certainly not what you need. Prevent the command event and assign the loginName value of the current line to the session after clicking.