我正在使用ASP.NET开发Intranet Web应用程序。现在，我需要为我的部门制定培训记录。该部门由四个小组组成。为此，我开发了以下记录：我使用了一个Repeator，我在里面放了GridView，因为我有三种不同类型的培训课程。我使用HiddenField来确定每种培训课程类型的ID。为了从数据库中检索数据，我使用了StoredProcedure。在这项漫长的任务之后，一切都很顺利。
现在，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。
<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'System.Web.UI.WebControls.Button'类型的对象强制转换为'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)
您需要更改此设置以满足您的需要，但如果您想检查在GridView控件中检查的项目，请尝试以下操作：
List<int> CheckBoxList = new List<int>();
for (int i = 0; i < GridView.Rows.Count; i++)
{
int yourColumnId = (int)GridView.DataKeys[i][0];
CheckBox cb = (CheckBox)GridView.Rows[i].FindControl("The name of your CheckBox");
if (cb.Checked)
{
CheckBoxList.Add(productId);
}
}
// Do something with CheckBoxList