我需要设置这些GridView以供管理员更新。因为我有 很多员工和每个GridView中的很多课程，我认为最好 更新GridView的方法是将空白字段显示为复选框和何时 管理员希望更新其中一名员工的记录，所有这些都是他的 我们需要做的只是选中复选框并单击更新按钮。 我可以 能够将空字段显示为复选框，但现在我不知道如何 将选中复选框的值发布到数据库。
我正在寻找它的方案是让系统检查每一个 每个GridView中的复选框，如果之前已经检查过，请将其保留为原样 是。如果它是空的并且现在只是检查它，它应该被添加到 员工记录中的数据库。因此，单击保存按钮将更新GridView。我原来的代码是：
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource1">
<ItemTemplate>
<asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Eval("GroupID")%>' />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
SelectCommandType="StoredProcedure" SelectCommand="kbiReport">
<%--FilterExpression="[Division] like '{0}%' and [Organization] like '{1}%'">--%>
<%--<FilterParameters>
<asp:ControlParameter ControlID="ddlDivision" Name="Division"
PropertyName="SelectedValue" Type="String" />
<asp:ControlParameter ControlID="ddlOrganization" Name="Organization"
PropertyName="SelectedValue" Type="String" />
</FilterParameters>--%>
<SelectParameters>
<%--ControlParameter is linked to the HiddenField above to generate different GridView based on different values
of GroupID--%>
<asp:ControlParameter ControlID="HiddenField1" Name="GroupID" PropertyName="Value" />
</SelectParameters>
</asp:SqlDataSource>
<asp:GridView ID="GridView1" runat="server"
AllowSorting="True"
CellPadding="3"
DataSourceID="SqlDataSource1"
CssClass="mGrid"
AlternatingRowStyle-CssClass="alt"
RowStyle-HorizontalAlign="Center"
OnRowDataBound="GridView1_RowDataBound" OnDataBound="GridView1_DataBound">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<HeaderStyle Font-Bold = "true" ForeColor="Black"/>
<Columns>
<asp:CommandField ShowSelectButton="True" />
<%--<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" AutoPostBack="true" OnCheckedChanged="chkSelect_CheckedChanged"/>
</ItemTemplate>
</asp:TemplateField>--%>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
</ItemTemplate>
</asp:Repeater>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
SelectCommand="SELECT DISTINCT GroupID FROM courses">
</asp:SqlDataSource>
<asp:Button ID="btnSave" runat="server" OnClick="btnSave_Click" Text="Save" />
<br /><br />
守则背后：
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
foreach (TableCell c in e.Row.Cells)
{
// Check if the cell vlaue = Yes
// if it is Yes, the cell will be colored with Light Green
if (c.Text.Equals("Yes"))
{
c.BackColor = System.Drawing.Color.LightGreen;
}
}
}
// The following is for changing the color of headers in each GridView based on the value of the HiddenFild
// BTW, the value of the HiddenField is the value of the GroupID in Group Table in the Database
else if(e.Row.RowType == DataControlRowType.Header){
switch (((HiddenField)((GridView)sender).Parent.FindControl("HiddenField1")).Value)
{
case "1":
for (int i = 5; i < e.Row.Cells.Count; i++)
e.Row.Cells[i].BackColor = System.Drawing.Color.LightBlue;
break;
case "2":
for (int i = 5; i < e.Row.Cells.Count; i++)
e.Row.Cells[i].BackColor = System.Drawing.Color.LightYellow;
break;
case "3":
for (int i = 5; i < e.Row.Cells.Count; i++)
e.Row.Cells[i].BackColor = System.Drawing.Color.Orange;
break;
}
}}
//For inserting checkboxes inside all courses buttons
protected void GridView1_DataBound(object sender, EventArgs e){
GridView GridView1 = (GridView)sender;
foreach (GridViewRow objRow in GridView1.Rows)
{
for (int i = 5; i < objRow.Cells.Count; i++){
CheckBox chkCheckBox = new CheckBox();
objRow.Cells[i].Controls.Add(chkCheckBox);
if (objRow.Cells[i].BackColor == System.Drawing.Color.LightGreen)
chkCheckBox.Checked = true;
}
}
}
//For updating the GridView (Save Button)
protected void btnSave_Click(object sender, EventArgs e)
{
}
更新 我将btnSave_Click按钮修改为如下：
//For updating the GridView (Save Button)
protected void btnSave_Click(object sender, EventArgs e)
{
GridView GridView1 = (GridView)sender;
// Are there checked boxes?
List<int> CheckBoxList = new List<int>();
for (int i = 0; i < GridView1.Rows.Count; i++)
{
int courseid = (int)GridView1.DataKeys[i][0];
CheckBox checkBox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox");
if (checkBox.Checked)
{
CheckBoxList.Add(courseid);
}
}
}
但我收到以下错误： Sys.WebForms.PageRequestManagerServerErrorException：无法将类型为“System.Web.UI.WebControls.Button”的对象强制转换为“System.Web.UI.WebControls.GridView”
我不知道为什么会出现这个错误。有人可以帮我这个吗？
答案 0 :(得分：0)
btnSave_Click中的广告投放无效。 sender变量引用了Button对象。您必须使用Repeater.Items集合来访问GridView对象。
您的代码应为：
protected void btnSave_Click(object sender, EventArgs e)
{
for(int i=0;i<Repeater1.Items.Count;i++)
{
GridView GridView1 = (GridView)Repeater1.Items[i].FindControl("GridView1");
List<int> CheckBoxList = new List<int>();
for (int i = 0; i < GridView1.Rows.Count; i++)
{
int courseid = (int)GridView1.DataKeys[i][0];
CheckBox checkBox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox");
if (checkBox.Checked)
{
CheckBoxList.Add(courseid);
}
}
}
}
答案 1 :(得分：0)
protected void btnSaveRankChanges_Click(object sender, EventArgs e)
{
foreach (GridViewRow grv in GridViewRankChanges.Rows)
{
CheckBox changeRankCheck = (CheckBox)grv.Cells[0].FindControl("CheckBoxRankChange");
if (changeRankCheck != null && changeRankCheck.Checked == true)
{
//Do your work for selected checkbox
}
}
}
希望它有所帮助。
答案 2 :(得分：0)
在visual basic .net中，我们经常使用循环网格视图。例如
Privtae Sub Button1_Click(sender As Object, e As System.EventArgs)
Dim rows as gridviewrows
For Each rows in gridview1.rows
dim chkbox as new checkbox
'since we find specific control with unique id so we use to find that control by
'using the method FindControl
chkbox = rows.findcontrol("chkInGridview")
if chkbox.checked then
'your code goes here
else
'your code goes here
end if
Next
End Sub
P / S：
你可以通过多种方式解决这个问题。您可以尝试使用嵌套的gridview。