开发自己的SQL2005报表查看SharePoint WebPart（四）

来源：互联网发布：淘客软件下载编辑：程序博客网时间：2024/04/30 07:45

这一节，我们给Web part增加报表查询参数。为了演示，这里只增加两个查询参数：开始时间和结束时间。这两个参数都是日期型的数据，为了方便用户操作，我使用了client端的日历脚本来实现日期输入。

与上一节相比，我们需要增加两部分工作

第一步：构造日期输入控件

我的页面布局大概是这样的：

From [_txtStartDate] [_btnStartDate] To [_txtStartDate] [_btnEndDate] [_cmdOK] 参数输入区报表显示区状态来栏

为了加入参数，我在构造函数里创建了一组table，将控件分别加入到各单元格中。

下面为代码

protected string _reportServerURL = "";// = "http://ctc-bar:81/ReportServer/ReportService.asmx";

protected string _reportPath = "";// = "/BARreports/EBCdetailList";

// UI controls

protected HtmlInputText _txtStartDate = BuildTextBox("txtStartDate");protected HtmlButton _btnStartDate = new HtmlButton();protected HtmlInputText _txtEndDate = BuildTextBox("txtEndDate");protected HtmlButton _btnEndDate = new HtmlButton();protected Button _cmdOK = new Button();protected HtmlGenericControl ReportView = new HtmlGenericControl();protected Label _lblStatus = new Label();protected Label _lblError = new Label();protected HtmlInputHidden ctrlPrefix = new HtmlInputHidden();protected string canlander_JSP = "";

#region

{

canlander_JSP = BARreportWebPart.Properties.

initailize the web controlspublic BARreportWebPartClass()Resources.Canlander_JSP;//<input type=hidden id="ctrlPrefix" name="ctrlPrefix" value='<asp:Literal Runat=server ID=ctrlPrefix></asp:Literal>'>

ctrlPrefix.ID =

ctrlPrefix.Name =

ctrlPrefix.Value =

WebPart_Load();

}

"ctrlPrefix";"ctrlPrefix";"<asp:Literal Runat=server ID=ctrlPrefix></asp:Literal>";/// <summary>

/// load the web part UI controls

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

{

protected void WebPart_Load()// build up the table that is our UI

Label ParameterName;TableRow tr;TableCell cell;//build the main table

t2.ID =

t2.CssClass =

t2.Width =

t2.Height =

Table t2 = new Table();"TblMain";"mainTable";new Unit(100, UnitType.Percentage);new Unit(100, UnitType.Percentage);//add the top table

tr =

tr.ID =

t2.Rows.Add(tr);

cell =

cell.ID =

t2.Rows[0].Cells.Add(cell);

t2.Rows[0].Cells[0].VerticalAlign =

t2.Rows[0].Cells[0].HorizontalAlign =

new TableRow();"TblMainRow1";new TableCell();"TblMainRow1Cell1";VerticalAlign.Middle;HorizontalAlign.Left;//add the content table

t2.Rows.Add(

t2.Rows[1].Cells.Add(

t2.Rows[1].Cells[0].VerticalAlign =

t2.Rows[1].Cells[0].HorizontalAlign =

new TableRow());new TableCell());VerticalAlign.Middle;HorizontalAlign.Left;//add the bottom table

t2.Rows.Add(

t2.Rows[2].Cells.Add(

t2.Rows[2].Cells[0].VerticalAlign =

t2.Rows[2].Cells[0].HorizontalAlign =

Controls.Add(t2);

new TableRow());new TableCell());VerticalAlign.Middle;HorizontalAlign.Left;///build top table

tblTop.ID =

tblTop.Width =

tblTop.Height =

tr =

tr.ID =

tblTop.Rows.Add(tr);

cell =

cell.ID =

tblTop.Rows[0].Cells.Add(

tblTop.Rows[0].Cells[0].VerticalAlign =

tblTop.Rows[0].Cells[0].HorizontalAlign =

ParameterName =

ParameterName.Text =

_txtStartDate.Attributes.Add(

_btnStartDate.ID =

_btnStartDate.InnerText =

Table tblTop = new Table();"TblTop";new Unit(100, UnitType.Percentage);new Unit(100, UnitType.Percentage);new TableRow();"TblTopRow1";new TableCell();"TblTopRow1Cell1";new TableCell());VerticalAlign.Middle;HorizontalAlign.Center;new Label();"From";"ondblclick", "show_cele_date(this,'','',this)");"btnStartDate";"Calendar";//_btnStartDate.Attributes.Add("onclick", "show_cele_date(this,'','',document.getElementById('" + ClientID_txtStartDate + "'))");

tblTop.Rows[0].Cells[0].Controls.Add(ParameterName);

tblTop.Rows[0].Cells[0].Controls.Add(_txtStartDate);

tblTop.Rows[0].Cells[0].Controls.Add(_btnStartDate);

tblTop.Rows[0].Cells.Add(

tblTop.Rows[0].Cells[1].VerticalAlign =

tblTop.Rows[0].Cells[1].HorizontalAlign =

ParameterName =

ParameterName.Text =

_txtEndDate.Attributes.Add(

_btnEndDate.InnerText =

_btnEndDate.Attributes.Add(

tblTop.Rows[0].Cells[1].Controls.Add(ParameterName);

tblTop.Rows[0].Cells[1].Controls.Add(_txtEndDate);

tblTop.Rows[0].Cells[1].Controls.Add(_btnEndDate);

tblTop.Rows.Add(

tblTop.Rows[1].Cells.Add(

tblTop.Rows[1].Cells[0].VerticalAlign =

tblTop.Rows[1].Cells[0].HorizontalAlign =

_cmdOK.Text =

tblTop.Rows[1].Cells[0].Controls.Add(_cmdOK);

_cmdOK.Click +=

new TableCell());VerticalAlign.Middle;HorizontalAlign.Center;new Label();"To";"ondblclick", "show_cele_date(this,'','',this)");"Calendar";"onclick", "show_cele_date(this,'','',GetObject('" + _txtEndDate.ClientID + "'))");new TableRow());new TableCell());VerticalAlign.Middle;HorizontalAlign.Center;"View Report";new EventHandler(OnOKClick);//add the top table into table main

t2.Rows[0].Cells[0].Controls.Add(tblTop);

//build bottom table

tblBottom.Width =

tblBottom.Height =

tblBottom.Rows.Add(

tblBottom.Rows[0].Cells.Add(

tblBottom.Rows[0].Cells[0].VerticalAlign =

tblBottom.Rows[0].Cells[0].HorizontalAlign =

_lblStatus.Text =

tblBottom.Rows[0].Cells[0].Controls.Add(_lblStatus);

Table tblBottom = new Table();new Unit(100, UnitType.Percentage);new Unit(100, UnitType.Percentage);new TableRow());new TableCell());VerticalAlign.Middle;HorizontalAlign.Center;"";//add the bottom table into main table

t2.Rows[2].Cells[0].Controls.Add(tblBottom);

//build the content table

Table tblContent = new Table();//Step 1:

tblContent.Rows.Add(

tblContent.Rows[0].Cells.Add(

ReportView.InnerText =

tblContent.Rows[0].Cells[0].Controls.Add(ReportView);

new TableRow());new TableCell());"report view region";//add the content table into main table

t2.Rows[1].Cells[0].Controls.Add(tblContent);

Controls.Add(ctrlPrefix);

}

/// <summary>

/// Build a new textbox that has standard props.

/// </summary>

/// <param name="id">The id for the textbox.</param>

/// <returns>A TextBox</returns>

{

t.ID = id;

}

private static HtmlInputText BuildTextBox(string id)HtmlInputText t = new HtmlInputText();return t;

#endregion

第二步：注册javascript脚本来实现日历输入。

为了更加友好的用户操作，需要利用javascript来实现日期输入。javascript脚本很长，所以我把脚本保存在资源文件中，这样，对脚本的修改大大方便了。具体原理参见我的另一篇文章http://blog.csdn.net/yanwei100/archive/2007/03/15/1530528.aspx

由于脚本是运行在一个自定义web控件中，所以需要解决ClientID的问题，具体方法参考我的另外一篇文章。

下面是代码

#region

{

RegisterJSP();

regist Java scriptprotected override void OnLoad(EventArgs e)// set ctrlPrefix's value

string name = this.ClientID;string[] elm = ctrlPrefix.ClientID.Split('_'); //get an array of values

ctrlPrefix.Value = ctrlPrefix.ClientID.Replace(elm[elm.Length - 1],

""); //get the last element and replace from the id

}

{

base.OnLoad(e);void RegisterJSP()//read jsp file from resource

String csname1 = "CalendarScript";Type cstype = this.GetType();// Get a ClientScriptManager reference from the Page class.

ClientScriptManager cs = Page.ClientScript;// Check to see if the client script is already registered.

{

cs.RegisterClientScriptBlock(cstype, csname1, canlander_JSP,

}

if (!cs.IsClientScriptBlockRegistered(cstype, csname1))false);//add the getprefix function

strbld.Append(

{

cs.RegisterClientScriptBlock(cstype, csname2, strbld.ToString(),

}

{

ClientID_txtStartDate = ctrl.ClientID;

}

{

_btnStartDate = (

}

{

_btnStartDate.Attributes.Add(

}

StringBuilder strbld = new StringBuilder();"<script language ='javascript' type='text/javascript' >");"function getCrtlPrefix() {");"var prefix; ");"var objCrtlPrefix = document.getElementById('" + ctrlPrefix.ClientID + "');");"if (objCrtlPrefix)");"prefix = objCrtlPrefix.value;");"return prefix;}");"function GetObject(ctrlName) {");"var prefix = getCrtlPrefix();");"var objCrtl = document.getElementById(prefix + ctrlName);");"if (objCrtl)");"return objCrtl;");" else ");" alert('not found!');} ");"</script>");string csname2 = "getCrtlPrefixScript";if (!cs.IsClientScriptBlockRegistered(cstype, csname2))false);protected override void OnPreRender(EventArgs e)string ClientID_txtStartDate="";HtmlButton _btnStartDate = null;foreach (Control ctrl in Controls[0].Controls[0].Controls[0].Controls[0].Controls[0].Controls[0].Controls)if ("txtStartDate" == ctrl.ID)if ("btnStartDate" == ctrl.ID)HtmlButton)ctrl;if (null != _btnStartDate)"onclick", "show_cele_date(this,'','',document.getElementById('" + ClientID_txtStartDate + "'))");base.OnPreRender(e);

#endregion

最后，将用户输入的日期加入到web service的查询参数中：

{

writer.Write(

}

ReportingServer.

{

parameterValues =

{

parameterValues[i] =

parameterValues[i].Name = parameters[i].Name;

parameterValues[i].Label = parameters[i].Prompt;

}

protected override void Render(System.Web.UI.HtmlTextWriter writer)base.Render(writer);if (string.Empty == ReportServerURL.Trim() || null == ReportServerURLstring.Empty == ReportPath.Trim() || null == ReportPath)"please set the ReportServerURL, ReportPath");return;string reportServerURL = ReportServerURL;string reportPath = ReportPath;ReportAdapter rsAdapter = new ReportAdapter(reportServerURL, reportPath);ReportParameter[] parameters = rsAdapter.GetParameters();ParameterValue[] parameterValues = null;if (parameters.Length > 0)new ReportingServer.ParameterValue[parameters.Length];for (int i = 0; i < parameters.Length; i++)new ReportingServer.ParameterValue();DateTime startDate = new DateTime(DateTime.Now.Year,DateTime.Now.Month,1);DateTime endDate = startDate.AddMonths(1);try

{

startDate =

}

DateTime.Parse(_txtStartDate.Value);catch{}try

{

endDate =

}

parameterValues[0].Value = startDate.ToString(

DateTime.Parse(_txtEndDate.Value);catch{}"yyyy-MM-dd"); //"2007-1-1";

parameterValues[1].Value = endDate.ToString(

"yyyy-MM-dd") ;//"2007-3-31";

parameterValues[2].Value =

parameterValues[3].Value =

parameterValues[4].Value =

}

System.Text.

"0,1,2,3,4,5,6,7,8";"Government,Enterprise,Partner,International";"Requested,Confirmed,Cancelled,Closed";Encoding enc = System.Text.Encoding.UTF8;byte[] result = rsAdapter.RenderReport(parameterValues);string htmlResult = enc.GetString(result);//htmlResult = htmlResult.Replace(reportServerURL.Replace("/ReportService.asmx", "?"), "http://" & Request("SERVER_NAME") & Request("SCRIPT_NAME") & "?Report=");

writer.Write(htmlResult);

}