Please explain some code just now, thank you

vincentngacn

int iIndex = Convert.ToInt32 (e.CommandArgument);
What value does e.commandargument get in the foreground? <Asp: ButtonField ButtonType = "Button" Text = "detail" CommandName = "detail" /> does not have a commandargument value.
I click here. Its value is the current row index. Does this mean?

            GridViewRow row = this.GridView1.Rows [iIndex];
            GridViewRow NewRow = new GridViewRow (iIndex + 1, iIndex, DataControlRowType.DataRow, DataControlRowState.Normal);
// In this line (iIndex + 1, iIndex, DataControlRowType.DataRow, DataControlRowState.Normal);
DataControlRowType.DataRow, DataControlRowState.Normal refers to the type and state of the new behavior. What I don't understand is the previous iIndex + 1, iIndex,

            NewRow.Cells.Add (new TableCell ());
// Why should NewRow.Cells.Add (new TableCell ());
            NewRow.Cells [0] .ColumnSpan = row.Cells.Count;

...

            this.GridView1.Controls [0] .Controls.AddAt (iIndex + 2, NewRow);

            NewRow.Cells [0] .Controls.Add (this.rp1);

shenmue024

commandargument is actually the current line number.

shenmue024

iIndex + 1 refers to the row after the current row.

The second iIndex refers to the location of the corresponding data source. In fact, it does not matter, because he does not bind the data

shenmue024

Of course, if you want to query it from the table, you can use it.

vincentngacn

That iIndex + 1, iIndex ,? ? ?
 NewRow.Cells.Add (new TableCell ()); whether to add columns
(Whether the row is added when the row is added, and the content will be displayed only if the column is added)

shenmue024

// Why do you need NewRow.Cells.Add (new TableCell ()); here?
There are no cells in this row.
Must be added manually

vincentngacn

Because the description of iIndex + 1, iIndex, is not clear what he said is not clear
So I do n’t know what these two mean
I can't make mistakes if I change them to something else: 0,0,

vincentngacn

// Why do you need NewRow.Cells.Add (new TableCell ()); here?
There are no cells in this row.
Must be added manually
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Will the number of single grids be the number of single grids in the previous row as soon as he is added?
There should be only one
And he has not
this.GridView1.Controls [0] .Controls.AddAt (iIndex + 2, NewRow);
how can
NewRow.Cells [0] .ColumnSpan = row.Cells.Count;
At this time, the number of NewRow.cells should be 1

shenmue024

I can't make mistakes if I change them to something else: 0,0,
===========
Because this row is added manually, this rowIndex and DataItemIndex are meaningless.
However, this parameter must be specified when new.

shenmue024

NewRow.Cells.Add (new TableCell ());

This is to add only one cell, which has nothing to do with the previous row, because this row is not derived from the bound data.

It is new.




NewRow.Cells [0] .ColumnSpan = row.Cells.Count;
At this time, the number of NewRow.cells should be 1
=========
Yes, but after the = sign is row row is the original row, the existing
 GridViewRow row = this.GridView1.Rows [iIndex];