关于asp.net:n ASP .NET 4.5 SelectMethod不能在单击按钮时将数据绑定到网格视图

n ASP .NET 4.5 SelectMethod is not able to bind data to grid view on button click

我正在使用ASP.Net 4.5，并且面临与使用"选择方法"进行网格视图的数据绑定有关的问题。

网格也可以将数据绑定到自定义分页上。

问题在于过滤数据。我有一个asp按钮，通过单击此按钮，我可以使用存储的proc获取经过过滤的数据。但是这次网格无法在SelectMethod中调用我在aspx页面中针对该网格提到的方法。

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<asp:GridView ID="gEmployee" runat="server"

AutoGenerateColumns="False"

OnRowCommand="gEmployee_Command" CellPadding="4"

OnRowDataBound="gEmployee_RowDataBound"

AllowCustomPaging="true" PageSize="10" PagerSettings-Visible="false"

CssClass="mGrid"

AllowSorting ="true"

AlternatingRowStyle-CssClass="alt"

ItemType="ModelEntityLayer.ClsEmployee" SelectMethod="BindGrid"

OnSorting ="gEmployee_OnSorting" HeaderStyle-Wrap="false" DataKeyNames="PropClockNumber">

上面的

代码显示了我为网格视图设置的属性。

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public IQueryable<ClsEmployee> BindGrid()

{

int intTotalPages = 0;

objBALEmployee = new ClsEmployeeBAL();

List<ClsEmployee> employee = null;

if ((string)Session["QueryResult"] != null)

{

employee = objBALEmployee.GetPageWiseData(gEmployee.PageIndex, gEmployee.PageSize, ViewState["SortExpression"] != null ? ViewState["SortExpression"].ToString() : ViewState["ClockNumber"].ToString(), ViewState["SortOrder"] != null ? ViewState["SortOrder"].ToString() :"asc", ref intTotalPages, ((string)Session["QueryResult"]));

Session.Remove("QueryResult");

}

else

{

if (Convert.ToInt32(ViewState["IsEditSearch"]) != 1)

{

employee = objBALEmployee.GetPageWiseData(gEmployee.PageIndex, ViewState["SortExpression"] != null ? ViewState["SortExpression"].ToString() : ViewState["ClockNumber"].ToString(), ViewState["SortOrder"] != null ? ViewState["SortOrder"].ToString() :"asc", gEmployee.PageSize, ref intTotalPages);

}

else

{

employee = objBALEmployee.GetPageWiseData(gEmployee.PageIndex, gEmployee.PageSize, ViewState["SortExpression"] != null ? ViewState["SortExpression"].ToString() : ViewState["ClockNumber"].ToString(), ViewState["SortOrder"] != null ? ViewState["SortOrder"].ToString() :"asc", ref intTotalPages, dlEmployee.SelectedValue+" = '"+txtSearch.Text.Trim()+"'");

}

}

var lstEmployee = employee.AsQueryable();

if (intTotalPages > 0)

{

CustomPager.TotalPages = intTotalPages %gEmployee.PageSize == 0 ? intTotalPages /gEmployee.PageSize : intTotalPages / gEmployee.PageSize + 1;

CustomPager.Visible = true;

lblNoRecordsFound.Visible = false;

NoRecords.Visible = false;

}

else

{

CustomPager.Visible = false;

lblNoRecordsFound.Visible = true;

NoRecords.Visible = true;

}

ExportData1.DisableBtn(gEmployee);

ExportData.ExportCheck = false;

return lstEmployee;

}

上面的代码显示了我为grid中的selectMethod设置的bindGrid方法。

受保护的无效btnGo_Click(对象发送者，EventArgs e)

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{

ViewState["IsEditSearch"] ="1";

hiddenSearchField.Value = dlEmployee.SelectedValue;

hiddenSearchValue.Value = txtSearch.Text.Trim();

gEmployee.SelectMethod ="BindGrid";

}

上面的代码是为单击按钮而编写的。

尽管我在点击代码上再次编写了gEmployee.SelectMethod ="BindGrid";，但bindGrid并没有被解雇。因此，我无法将新过滤的数据绑定到grid。

请对此进行指导。

谢谢。

我认为您需要在btnGo_Click的末尾添加一行，以明确调用网格上的DataBind()：

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protected void btnGo_Click(object sender, EventArgs e)
{
ViewState["IsEditSearch"] ="1";
hiddenSearchField.Value = dlEmployee.SelectedValue;
hiddenSearchValue.Value = txtSearch.Text.Trim();
gEmployee.SelectMethod ="BindGrid";

gEmployee.DataBind();
}