我正在更新一个旧程序，它从不同的表（使用存储过程）收集信息并将它们显示在 ASPxGridView 上。我又添加了三列并尝试将它们绑定到 GridView。但是，我收到“未找到字段/属性”错误，无法继续。
起初，我以为没有检索到数据，但调试显示我用来填充 ASPxGridView 的 List 对象确实包含我想要添加的数据。
protected void search_Click(object sender, EventArgs e)
{
CommentsDataSource.SelectParameters.Clear();
CommentsDataSource.SelectMethod = "SelectCommentsByProject";
CommentsDataSource.SelectParameters.Add("pProjectId", System.Data.DbType.String, searchStringTextBox.Text.Trim());
CommentsDataSource.Databind();
}
搜索还有其他几个选项，但我主要关心的是在处理其余部分之前至少有一个工作。
private List<Comment> SelectCommentsByProject(string pSearchString)
{
List<Comments> comments = null;
if(!string.IsNullOrEmpty(pSearchString))
{
System.Data.EntityClient.EntityConnection ecnxn = (System.Data.EntityClient.EntityConnection)esmEntityManager.Connection;
System.Data.SqlClient.SqlConnection cnxn = (System.Data.SqlClient.SqlConnection)ecnxn.StoreConnection;
using (cnxn)
{
cnxn.Open();
SqlCommand cmd = new SqlCommand();
cmd = new SqlCommand("usp_esm_comment_getByProjectID", cnxn);
cmd.Parameters.Add(new SqlParameter("@ProjectID", pSearchString));
try
{
cmd.CommandType = System.Data.CommandType.StoredProcedure;
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd;
System.Data.DataSet ds = new System.Data.DataSet();
da.Fill(ds);
for (int i = 0; i < ds.Tables.Count; i++)
{
if (ds.Tables[i] != null && ds.Tables[i].Rows.Count > 0)
{
comments = new List<Comment>();
foreach (System.Data.DataRow row in ds.Tables[i].Rows)
{
Comment comment = new Comment();
comment.CommentID = (int)row["CommentId"];
comment.ComplianceID = (Guid)row["ComplianceID"];
comment.CommentText = (row["Comment"] is DBNull) ? null : row["Comment"].ToString();
comment.CreatedBy = (row["CreatedBy"] is DBNull) ? null : row["CreatedBy"].ToString();
comment.CreatedOn = Convert.ToDateTime((row["CreatedOn"] is DBNull) ? null : row["CreatedOn"].ToString());
comment.LastModifiedBy = (row["LastModifiedBy"] is DBNull) ? null : row["LastModifiedBy"].ToString();
comment.LastModifiedOn = Convert.ToDateTime((row["LastModifiedOn"] is DBNull) ? null : row["LastModifiedOn"].ToString());
comment.RequestID = (row["RequestID"] is DBNull) ? null : row["RequestID"].ToString();
comment.TypeOfService = (row["TypeOfService"] is DBNull) ? null : row["TypeOfService"].ToString();
comment.ProjectID = (row["ProjectID"] is DBNull) ? null : row["ProjectID"].ToString();
comment.ProjectManager = (row["PM"] is DBNull) ? null : row["PM"].ToString();
comment.TaskManager = (row["TMFullName"] is DBNull) ? null : row["TMFullName"].ToString();
comments.Add(comment);
}
}
}
ds.Dispose();
cnxn.Close();
}
}
}
return comments;
}
在调试中检查List<Comments>对象，我可以看到它包含ProjectID字段中的有效数据。但是，当我尝试运行它时，我不断收到该错误。
这是 ascx 的（部分）标记。
<dxwgv:ASPxGridView ID="commentsASPxGridView" runat="server" AutoGenerateColumns="False" DataSourceID="CommentsDataSource">
<Columns>
<dxwgv:GridViewDataTextColumn FieldName="ProjectID" Caption="Project ID" VisibleIndex="7" Name="ProjectID">
</dxwgv:GridViewDataTextColumn>
</Columns>
</dxwgv:ASPxGridView>
<dxprt:ASPxGridViewExporter ID="gridExport" runat="server" GridViewID="commentsASPxGridView"></dxprt:ASPxGridViewExporter>
<asp:ObjectDataSource ID="CommentsDataSource" runat="server" SelectMethod="SelCommentsByProject" OnDataBinding="DataBindTest"
TypeName="ESMWeb.ESMCommentService.CommentServiceClient">
<SelectParameters>
<asp:Parameter Name="pProjectId" DbType="String"/>
</SelectParameters>
</asp:ObjectDataSource>