protected void InfoContentDropdownlist_SelectIndexChanged(object sender, System.EventArgs e) //一定要声明成protected或者public,不能是private的。
{
TQService.TQService service = new TQService.TQService();
DataSet pds = service.GetInfoCode();
int Len = pds.Tables[0].Rows.Count;
string ddsstring;
string ddlstring;
DropDownList ddl = (DropDownList)sender;
DropDownList dds = (DropDownList)DataGrid1.Items[0].FindControl("InfoContentDropdownlist"); ddlstring = ddl.SelectedItem.Text; for(int DataCount=0; DataCount<Len; DataCount++)
{
ddsstring = pds.Tables[0].Rows[DataCount]["infocode"].ToString();
if(ddsstring == ddlstring)
{
ddsstring = pds.Tables[0].Rows[DataCount]["infocontent"].ToString();
if(dds != null)
dds.SelectedValue = ddsstring;
break;
}
}
}
{
TQService.TQService service = new TQService.TQService();
DataSet pds = service.GetInfoCode();
int Len = pds.Tables[0].Rows.Count;
string ddsstring;
string ddlstring;
DropDownList ddl = (DropDownList)sender;
DropDownList dds = (DropDownList)DataGrid1.Items[0].FindControl("InfoContentDropdownlist"); ddlstring = ddl.SelectedItem.Text; for(int DataCount=0; DataCount<Len; DataCount++)
{
ddsstring = pds.Tables[0].Rows[DataCount]["infocode"].ToString();
if(ddsstring == ddlstring)
{
ddsstring = pds.Tables[0].Rows[DataCount]["infocontent"].ToString();
if(dds != null)
dds.SelectedValue = ddsstring;
break;
}
}
}
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绑定代码发出来看看
1、DataGrid1.Items[0]好像是第一列,也就是标题行,你是不是弄错了?
2、DataGrid1在你调用这个方法前还没有进行绑定。
3、你能保证dds.SelectedValue = ddsstring;能执行吗?
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
this.BindGrid();
}
} private void BindGrid()
{ service = new TQService.TQService();
ds = service.GetBasicInfo();
if(ds!=null)
{
this.DataGrid1.DataSource = ds.Tables[0].DefaultView;
this.DataGrid1.DataBind();
}
}
我的是14列,但是DataGrid1.Items[14]会发生错误,索引值无效
————————
DataGrid1.Items[13]
for(int DataCount=1; DataCount<Len; DataCount++)
{}
private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
ListItemType lit = e.Item.ItemType;
if (lit == ListItemType.Header)
{
Table t = (Table)DataGrid1.Controls[0];
//t.Controls.Clear();
DataGridItem dgi = new DataGridItem(1,0,ListItemType.Pager); TableCell tc = new TableCell();
tc.ColumnSpan = 2;
tc.HorizontalAlign = HorizontalAlign.Center;
tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "信息类型";
dgi.Cells.Add(tc); tc = new TableCell();
tc.ColumnSpan = 4;
tc.HorizontalAlign = HorizontalAlign.Center;
tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "信息输出";
dgi.Cells.Add(tc); tc = new TableCell();
tc.ColumnSpan = 9;
tc.HorizontalAlign = HorizontalAlign.Center;
tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "信息发生情况";
dgi.Cells.Add(tc); tc = new TableCell();
tc.ColumnSpan = 4;
tc.HorizontalAlign = HorizontalAlign.Center;
tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "接收情况";
dgi.Cells.Add(tc); tc = new TableCell();
tc.ColumnSpan = 4;
tc.HorizontalAlign = HorizontalAlign.Center;
tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "信息核查情况";
dgi.Cells.Add(tc); tc = new TableCell();
tc.ColumnSpan = 3;
//tc.HorizontalAlign = HorizontalAlign.Center;
//tc.VerticalAlign = VerticalAlign.Middle;
tc.BackColor = Color.White;
tc.ForeColor = Color.Black;
tc.Font.Bold = true;
tc.Font.Underline = false;
tc.Text = "数据操作";
dgi.Cells.Add(tc); t.Rows.AddAt(1,dgi);
}
}
{
//在这里就可以加入其他代码
TQService.TQService service = new TQService.TQService();
DataSet pds = service.GetInfoCode();
int Len = pds.Tables[0].Rows.Count;
string ddsstring;
string ddlstring;
DropDownList ddl = (DropDownList)sender;
DropDownList dds; foreach (DataGridItem item in this.DataGrid1.Items)
{
dds = (DropDownList)item.FindControl("InfoContentDropdownlist"); ddlstring = ddl.SelectedItem.Text.Trim(); for(int DataCount=0; DataCount<Len; DataCount++)
{
//获取数据
ddsstring = pds.Tables[0].Rows[DataCount]["infocode"].ToString().Trim();
if(ddsstring == ddlstring)
{
ddsstring = pds.Tables[0].Rows[DataCount]["infocontent"].ToString().Trim();
if(dds != null)
dds.SelectedValue = ddsstring;
break;
}
}
}
}